[sheet: Cover]

Field	Value
Matter	Halcyon Semiconductor AG — US ADR IPO
C&H Matter Number	1032-00003
Issuer	Halcyon Semiconductor Aktiengesellschaft
Issuer Jurisdiction	Federal Republic of Germany; HRB 217458, Amtsgericht München
Issuer HQ	Maximilianstraße 72, 80539 Munich, Germany
Existing Listing	Frankfurt Stock Exchange (FRA: HCY), Prime Standard
Target US Exchange	Nasdaq Global Select Market (Ticker: HCYN)
Registration Statement Form	Form F-1 (Securities Act of 1933)
ADR Registration	Form F-6
ADR Depositary	Meridian Trust Company, N.A.
ADS Ratio	1 ADS = 2 Ordinary Shares (Stammaktien)
Offering Type	Level III ADR Program — Initial Public Offering of ADSs
Total ADSs Offered (Base Deal)	21,400,000 ADSs
Primary ADSs (New Issuance)	15,000,000 ADSs (30,000,000 new ordinary shares)
Secondary ADSs (Selling Shareholders)	6,400,000 ADSs (12,800,000 existing ordinary shares)
Overallotment Option	Up to 3,210,000 additional ADSs (15% of base deal)
ADS Price Range	$39.00–$45.00 per ADS
Targeted Gross Proceeds (Base Deal)	$900,000,000
Maximum Total Offering Size (incl. Greenshoe)	~$1,034,812,600
Gross Spread	3.50% ($31,500,000 on base deal)
Net Proceeds to Issuer (Primary, Base)	$607,950,000
Net Proceeds to Selling Shareholders (Secondary, Base)	$260,550,000
Lead Left Bookrunner / Representative	Westbridge Securities LLC
Joint Bookrunners	Pinnacle Morgan & Co., Inc.; Andover Barcliffe Group Inc.

Co-Manager	Northpointe Capital LLC
US Counsel to Issuer	Calderwood & Harkness LLP
US Counsel to Underwriters	Varen & Kessler LLP
German Counsel to Issuer	Bähr Stein Rechtsanwälte PartGmbB
German Counsel to Underwriters	Prumvane Thornton LLP
Independent Auditors	Blackmere & Whitfield LLP / GmbH WPG
Transfer Agent / ADS Registrar	Crestfield Transfer Services Inc.
Target Pricing Date	July 1, 2026
Target Closing / Settlement Date (T+2)	July 6, 2026
Greenshoe Expiration	July 31, 2026
Lock-Up Expiration	December 28, 2026 (180 days from pricing)
Prepared By	Calderwood & Harkness LLP — Vivienne St. Claire / Claire Dempsey / Audrey Zhou
Last Updated	[Date]
Status Legend	Not Started / In Progress / Draft Circulated / Final / Executed / Delivered / N/A

[sheet: Closing Checklist]

Item No.	Category	Document / Deliverable Description	Responsible Party	Delivery From	Delivery To	Status	Delivery Method	Due Date	Notes / Comments
1	A. Registration & SEC	Registration Statement on Form F-1 (as amended) — declared effective by SEC	Calderwood & Harkness LLP	SEC	All Parties	In Progress	EDGAR	June 22, 2026 (effectiveness target)	Target effectiveness date; acceleration request to be filed
2	A. Registration & SEC	Registration Statement on Form F-6 — declared effective by SEC	Calderwood & Harkness LLP	SEC	All Parties	In Progress	EDGAR	June 22, 2026	To be filed concurrently or shortly after F-1; registers ADSs issued by Meridian Trust Company, N.A.
3	A. Registration & SEC	Acceleration Request Letter	Calderwood & Harkness LLP	C&H	SEC Division of Corporation Finance	Not Started	EDGAR	Prior to June 22, 2026	Includes Tandy representations
4	A. Registration & SEC	Final Prospectus (Rule 424(b) filing)	Calderwood & Harkness LLP	C&H	SEC via EDGAR	Not Started	EDGAR	Within required period after pricing (July 1, 2026)	To include final pricing, number of ADSs, and underwriting discount
5	A. Registration & SEC	SEC CIK Number Assignment Confirmation	Calderwood & Harkness LLP	SEC / EDGAR	C&H / Halcyon	Not Started	Email / EDGAR	Prior to initial filing	CIK TBD upon EDGAR filing
6	B. Underwriting Agreement & Pricing	Underwriting Agreement — executed by all parties	Calderwood & Harkness LLP / Varen & Kessler LLP	Halcyon / Selling Shareholders / Underwriters	All Parties	Not Started	Original + PDF	July 1, 2026 (pricing date)	Among Halcyon Semiconductor AG, Rheintal Industrieholding GmbH, Kestrel Capital Partners AG, and the several underwriters, with Westbridge Securities LLC as representative; New York law governed; gross spread 3.50%
7	B. Underwriting Agreement & Pricing	Pricing Agreement / Terms Agreement — executed	Calderwood & Harkness LLP / Varen & Kessler LLP	Westbridge Securities LLC (as representative)	All Parties	Not Started	Original + PDF	July 1, 2026 (pricing date)	Sets final ADS price (within range $39.00–$45.00), number of firm ADSs per underwriter, and per-ADS discount
8	B. Underwriting Agreement & Pricing	Schedule of Selling Shareholders to Underwriting Agreement	Calderwood & Harkness LLP	C&H	Underwriters	Not Started	PDF	July 1, 2026	Rheintal: 8,500,000 shares / 4,250,000 ADSs; Kestrel: 4,300,000 shares / 2,150,000 ADSs; Total secondary: 6,400,000 ADSs
9	B. Underwriting Agreement & Pricing	Underwriter Allocation Schedule (among syndicate members)	Westbridge Securities LLC	Westbridge	C&H / V&K / All Underwriters	Not Started	PDF	July 1, 2026	Westbridge 40% / Pinnacle Morgan 30% / Andover Barcliffe 20% / Northpointe 10%
10	C. Deposit Agreement & ADR Documents	Deposit Agreement — executed by all parties	Calderwood & Harkness LLP	Halcyon / Meridian Trust Company, N.A.	All Parties	Not Started	Original + PDF	July 6, 2026 (closing)	Among Halcyon Semiconductor AG, Meridian Trust Company, N.A. as Depositary, and holders/beneficial owners of ADSs; Delaware law governed; 1 ADS = 2 ordinary shares; depositary fee $0.05/ADS/annum
11	C. Deposit Agreement & ADR Documents	Form of American Depositary Receipt (ADR) — final form (Exhibit to Deposit Agreement)	Calderwood & Harkness LLP	C&H / Meridian Trust	Filed as Exhibit	Not Started	Original + EDGAR	July 6, 2026	Certificate form with CUSIP number; exhibit to Deposit Agreement
12	C. Deposit Agreement & ADR Documents	Depositary Receipts Fee Schedule — final (Exhibit to Deposit Agreement)	Calderwood & Harkness LLP / Meridian Trust Company, N.A.	Meridian Trust	Filed as Exhibit	Not Started	PDF	July 6, 2026	$0.05/ADS annual service fee; issuance/cancellation fees; reimbursement charges
13	C. Deposit Agreement & ADR Documents	Letter Agreement — Halcyon and Meridian Trust (Pre-Effective Arrangements) — executed	Calderwood & Harkness LLP	Halcyon / Meridian Trust	Both Parties	Not Started	Original + PDF	Prior to closing	Pre-effective cooperation; German custodian appointment; ordinary share deposit mechanics; coordination
14	C. Deposit Agreement & ADR Documents	German Custodian Appointment Letter — executed	Bähr Stein Rechtsanwälte / Meridian Trust Company, N.A.	Meridian Trust	German Custodian / Ashgrove Enterprises	Not Started	Original	Prior to closing	Sub-custodian in Germany for safekeeping of deposited ordinary shares under Deposit Agreement; Ashgrove Enterprises Banking AG settlement
15	D. Legal Opinions — Issuer's US Counsel (Calderwood & Harkness LLP)	Opinion Letter — Validity of ADSs	Calderwood & Harkness LLP (Vivienne St. Claire)	C&H	Underwriters / Westbridge Securities LLC	Not Started	Original + PDF	July 6, 2026 (closing)	Due authorization and valid issuance of ADSs; binding nature of Deposit Agreement
16	D. Legal Opinions — Issuer's US Counsel (Calderwood & Harkness LLP)	Negative Assurance Letter (10b-5 Letter)	Calderwood & Harkness LLP (Vivienne St. Claire)	C&H	Underwriters	Not Started	Original + PDF	July 6, 2026 (closing)	No untrue statement of material fact / no material omission in Registration Statement and Prospectus
17	D. Legal Opinions — Issuer's US Counsel (Calderwood & Harkness LLP)	Tax Opinion — US Federal Income Tax Consequences	Calderwood & Harkness LLP (Leonard Cross)	C&H	Filed as Exhibit / Underwriters	Not Started	Original + EDGAR	July 6, 2026 (closing)	PFIC conclusions (not a PFIC); treaty-rate withholding analysis (15% under US-Germany treaty Article 10); characterization of ADS distributions
18	E. Legal Opinions — Underwriters' US Counsel (Varen & Kessler LLP)	Opinion Letter — US Law Matters	Varen & Kessler LLP (Martin Ashford)	V&K	Underwriters	Not Started	Original + PDF	July 6, 2026 (closing)	Customary opinion covering Securities Act registration, no-conflicts, enforceability of underwriting agreement
19	E. Legal Opinions — Underwriters' US Counsel (Varen & Kessler LLP)	Negative Assurance Letter (10b-5 Letter)	Varen & Kessler LLP (Martin Ashford)	V&K	Underwriters	Not Started	Original + PDF	July 6, 2026 (closing)	Underwriters' counsel negative assurance
20	F. Legal Opinions — Issuer's German Counsel (Bähr Stein Rechtsanwälte)	Opinion Letter — German Law Matters (Issuer)	Bähr Stein Rechtsanwälte (Dr. Christoph Maurelban)	Bähr Stein	Underwriters / C&H	Not Started	Original + PDF	July 6, 2026 (closing)	Valid incorporation and existence of Halcyon AG; authorized capital; new share issuance; pre-emptive rights exclusion (Bezugsrechtsausschluss); corporate approvals
21	F. Legal Opinions — Issuer's German Counsel (Bähr Stein Rechtsanwälte)	Opinion Letter — German Tax Matters	Bähr Stein Rechtsanwälte (Dr. Christoph Maurelban)	Bähr Stein	Underwriters / C&H	Not Started	Original + PDF	July 6, 2026 (closing)	German withholding tax (26.375% statutory rate); treaty benefit availability (15% for US holders)
22	G. Legal Opinions — Underwriters' German Counsel (Prumvane Thornton LLP)	Opinion Letter — German Law Matters (Underwriters)	Prumvane Thornton LLP (Dr. Stefan Braun)	Prumvane Thornton	Underwriters	Not Started	Original + PDF	July 6, 2026 (closing)	Customary German law opinion for underwriters; corporate existence; enforceability under German law
23	H. Comfort Letters (Blackmere & Whitfield)	Comfort Letter — Initial (SAS 72 / ISAE 3000)	Blackmere & Whitfield LLP (Graham Templeton, NY) / Blackmere & Whitfield GmbH WPG (Dieter Kaufmann, Munich)	B&W	Underwriters / C&H / V&K	Not Started	Original + PDF	Date of Registration Statement effectiveness or pricing	Covers IFRS financial data in prospectus; circle-up procedures; SAS 72 / ISAE 3000 standards
24	H. Comfort Letters (Blackmere & Whitfield)	Comfort Letter — Bring-Down (as of closing date)	Blackmere & Whitfield LLP (Graham Templeton) / Blackmere & Whitfield GmbH WPG (Dieter Kaufmann)	B&W	Underwriters / C&H / V&K	Not Started	Original + PDF	July 6, 2026 (closing)	Bring-down to a date no more than 3 business days before closing

25	I. Issuer Certificates	Officer's Certificate — CEO/CFO Certificate	Halcyon Semiconductor AG	Dr. Friedrich Wendt (CEO) and Katarina Dalmqvist (CFO)	Underwriters / C&H	Not Started	Original + PDF	July 6, 2026 (closing)	Certifies accuracy of representations and warranties in underwriting agreement; compliance with conditions to closing; absence of material adverse change
26	I. Issuer Certificates	Secretary's / General Counsel's Certificate	Halcyon Semiconductor AG	Wilhelm Ostermann (General Counsel / Chefjustitiar)	Underwriters / C&H	Not Started	Original + PDF	July 6, 2026 (closing)	Certifies corporate authorizations (Vorstand and Aufsichtsrat resolutions); incumbency of officers; authenticity of organizational documents
27	I. Issuer Certificates	Good Standing Certificate — Halcyon Semiconductor AG (Commercial Register Extract)	Bähr Stein Rechtsanwälte	Amtsgericht München	Underwriters / C&H	Not Started	Original / Certified Copy	July 6, 2026 (closing)	HRB 217458 Amtsgericht München; recent Handelsregisterauszug
28	I. Issuer Certificates	Good Standing Certificate — Halcyon Semiconductor USA Inc. (Delaware)	Calderwood & Harkness LLP	Delaware Secretary of State	Underwriters / C&H	Not Started	Original / Certified Copy	July 6, 2026 (closing)	Delaware corporation; EIN 84-3927561
29	J. Selling Shareholder Certificates & Documents	Selling Shareholder Certificate — Rheintal Industrieholding GmbH	Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte	Margarethe Wendt (Managing Director, Rheintal)	Underwriters / C&H	Not Started	Original + PDF	July 6, 2026 (closing)	Confirms accuracy of representations and warranties; authority to sell 8,500,000 shares (4,250,000 ADSs)
30	J. Selling Shareholder Certificates & Documents	Selling Shareholder Certificate — Kestrel Capital Partners AG	Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte	Henrik Sørensen (Managing Partner, Kestrel)	Underwriters / C&H	Not Started	Original + PDF	July 6, 2026 (closing)	Confirms accuracy of representations and warranties; authority to sell 4,300,000 shares (2,150,000 ADSs)
31	J. Selling Shareholder Certificates & Documents	Custody Agreement / Power of Attorney — Rheintal Industrieholding GmbH — executed	Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte	Rheintal (Margarethe Wendt)	Custodian / Meridian Trust	Not Started	Original	Prior to closing	Irrevocable POA authorizing custodian to deliver 8,500,000 ordinary shares to German custodian for ADS conversion
32	J. Selling Shareholder Certificates & Documents	Custody Agreement / Power of Attorney — Kestrel Capital Partners AG — executed	Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte	Kestrel (Henrik Sørensen)	Custodian / Meridian Trust	Not Started	Original	Prior to closing	Irrevocable POA authorizing custodian to deliver 4,300,000 ordinary shares to German custodian for ADS conversion
33	J. Selling Shareholder Certificates & Documents	Selling Shareholder Questionnaire — Rheintal — completed	Calderwood & Harkness LLP	Rheintal	C&H / V&K	Not Started	PDF	Prior to effectiveness	Beneficial ownership, FINRA affiliations, material relationships
34	J. Selling Shareholder Certificates & Documents	Selling Shareholder Questionnaire — Kestrel — completed	Calderwood & Harkness LLP	Kestrel	C&H / V&K	Not Started	PDF	Prior to effectiveness	Beneficial ownership, FINRA affiliations, material relationships
35	K. Lock-Up Agreements	Lock-Up Agreement — Dr. Friedrich Wendt (CEO) — executed	Calderwood & Harkness LLP	Dr. Friedrich Wendt	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing (July 1, 2026)	180-day lock-up from pricing; restricts transfer, hedging, and pledging; consent agent: Westbridge Securities LLC
36	K. Lock-Up Agreements	Lock-Up Agreement — Katarina Dalmqvist (CFO) — executed	Calderwood & Harkness LLP	Katarina Dalmqvist	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up
37	K. Lock-Up Agreements	Lock-Up Agreement — Dr. Marcus Helder (CTO) — executed	Calderwood & Harkness LLP	Dr. Marcus Helder	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up
38	K. Lock-Up Agreements	Lock-Up Agreement — Ingrid Baumann (COO) — executed	Calderwood & Harkness LLP	Ingrid Baumann	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up
39	K. Lock-Up Agreements	Lock-Up Agreement — Wilhelm Ostermann (General Counsel) — executed	Calderwood & Harkness LLP	Wilhelm Ostermann	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up
40	K. Lock-Up Agreements	Lock-Up Agreement — Prof. Dr. Anneliese Voss (Supervisory Board Chair) — executed	Calderwood & Harkness LLP	Prof. Dr. Anneliese Voss	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up
41	K. Lock-Up Agreements	Lock-Up Agreement — Rheintal Industrieholding GmbH (Selling Shareholder) — executed	Calderwood & Harkness LLP / Bähr Stein	Margarethe Wendt for Rheintal	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up on retained shares (39,445,000 shares post-IPO)
42	K. Lock-Up Agreements	Lock-Up Agreement — Kestrel Capital Partners AG (Selling Shareholder) — executed	Calderwood & Harkness LLP / Bähr Stein	Henrik Sørensen for Kestrel	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day lock-up on retained shares (16,555,000 shares post-IPO)
43	K. Lock-Up Agreements	Lock-Up Agreement — Halcyon Semiconductor AG (Company Lock-Up) — executed	Calderwood & Harkness LLP	Halcyon (Dr. Friedrich Wendt / Katarina Dalmqvist)	Westbridge Securities LLC	Not Started	Original + PDF	Prior to pricing	180-day company lock-up; lock-up expiration December 28, 2026
44	L. Corporate Governance Documents	Code of Business Conduct and Ethics (US-Compliant) — adopted by Halcyon Board	Calderwood & Harkness LLP	Halcyon	Nasdaq / SEC (filed as exhibit)	Not Started	PDF / EDGAR	Prior to effectiveness	Nasdaq and SOX-compliant code
45	L. Corporate Governance Documents	Audit Committee Charter (US-Compliant) — adopted	Calderwood & Harkness LLP	Halcyon	Nasdaq / SEC	Not Started	PDF / EDGAR	Prior to effectiveness	Compliant with Nasdaq Rule 5605(c) and Exchange Act Rule 10A-3
46	L. Corporate Governance Documents	Whistleblower Policy (US-Compliant) — adopted	Calderwood & Harkness LLP	Halcyon	Filed / Internal	Not Started	PDF	Prior to effectiveness	SOX Section 301 compliant
47	L. Corporate Governance Documents	Nasdaq Corporate Governance Exemption Notice — filed	Calderwood & Harkness LLP	Halcyon	Nasdaq	Not Started	Nasdaq submission	Prior to listing	Disclosure of reliance on German home-country practices under Nasdaq Rule 5615(a)(3)
48	M. Nasdaq Listing	Nasdaq Listing Application (Nasdaq Global Select Market) — submitted and approved	Calderwood & Harkness LLP / Halcyon	Halcyon	Nasdaq	Not Started	Nasdaq submission	Prior to effectiveness	Proposed ticker: HCYN; Nasdaq Global Select Market
49	M. Nasdaq Listing	Nasdaq Listing Approval Letter	Nasdaq	Nasdaq	Halcyon / C&H / Underwriters	Not Started	Email / Letter	Prior to pricing	Conditional approval subject to effectiveness and meeting all conditions

50	N. FINRA	FINRA No-Objections Letter (Corporate Financing Department)	Varen & Kessler LLP	FINRA	Underwriters / C&H / V&K	Not Started	Email / Letter	Prior to effectiveness	FINRA review of underwriting compensation and arrangements; filed by underwriters' counsel
51	N. FINRA	FINRA Filing — Underwriting Compensation and Arrangements	Varen & Kessler LLP / Westbridge Securities LLC	V&K / Westbridge	FINRA	Not Started	FINRA filing system	Prior to effectiveness	Disclosure of gross spread (3.50% / $31,500,000), allocation among syndicate, and any other items of value
52	O. DTC / Settlement	DTC Eligibility Confirmation for ADSs	Meridian Trust Company, N.A. / Crestfield Transfer Services Inc.	Meridian Trust / Crestfield (Angela Moretti)	Underwriters / C&H	Not Started	Letter / Email	Prior to closing	ADSs to be eligible for book-entry transfer through DTC
53	O. DTC / Settlement	Ashgrove Enterprises / German Custodian Settlement Instructions	Bähr Stein Rechtsanwälte / Meridian Trust Company, N.A.	Meridian Trust / German Custodian	All Parties	Not Started	Email / Letter	Prior to closing	Settlement coordination between Ashgrove Enterprises Banking AG and DTC for ordinary share deposit and ADS issuance
54	O. DTC / Settlement	Confirmation of Deposit of Primary Ordinary Shares (30,000,000 shares) with German Custodian	Bähr Stein Rechtsanwälte / Halcyon	German Custodian	Meridian Trust / C&H	Not Started	SWIFT / Brightwater Enterprises	July 6, 2026 (closing)	New ordinary shares deposited with sub-custodian in Germany for ADS issuance
55	O. DTC / Settlement	Confirmation of Deposit of Secondary Ordinary Shares (12,800,000 shares) with German Custodian	Bähr Stein Rechtsanwälte / Selling Shareholders	German Custodian	Meridian Trust / C&H	Not Started	SWIFT / Brightwater Enterprises	July 6, 2026 (closing)	Rheintal: 8,500,000 shares; Kestrel: 4,300,000 shares
56	O. DTC / Settlement	Meridian Trust Confirmation of Issuance of ADSs (21,400,000 ADSs base deal)	Meridian Trust Company, N.A. (Patricia Novak)	Meridian Trust	Underwriters / DTC	Not Started	DTC / Letter	July 6, 2026 (closing)	Issuance via DTC book-entry
57	P. Funds Flow	Funds Flow Memorandum — executed/agreed	Calderwood & Harkness LLP	C&H	All Parties	Not Started	PDF	Prior to closing	Wire instructions for payment of aggregate purchase price; allocation of proceeds between issuer ($630M less spread) and selling shareholders ($270M less spread); payment to underwriters
58	P. Funds Flow	Wire Transfer Instructions — Halcyon Semiconductor AG	Halcyon (Katarina Dalmqvist, CFO)	Halcyon	Westbridge Securities LLC / C&H	Not Started	PDF / Email	Prior to closing	Issuer bank account details for receipt of ~$607,950,000 net primary proceeds
59	P. Funds Flow	Wire Transfer Instructions — Rheintal Industrieholding GmbH	Rheintal (Margarethe Wendt)	Rheintal	Westbridge Securities LLC / C&H	Not Started	PDF / Email	Prior to closing	Selling shareholder bank account for receipt of pro rata net secondary proceeds
60	P. Funds Flow	Wire Transfer Instructions — Kestrel Capital Partners AG	Kestrel (Henrik Sørensen)	Kestrel	Westbridge Securities LLC / C&H	Not Started	PDF / Email	Prior to closing	Selling shareholder bank account for receipt of pro rata net secondary proceeds
61	P. Funds Flow	Confirmation of Wire Transfers — Closing Funds Settlement	Westbridge Securities LLC	Westbridge	C&H / Halcyon / Selling Shareholders	Not Started	Email / SWIFT	July 6, 2026 (closing)	Confirmation that all funds have been wired and received
62	Q. German Corporate Approvals	Vorstand Resolution — Approving US IPO, New Share Issuance, and Related Agreements	Bähr Stein Rechtsanwälte	Halcyon Vorstand	C&H / Underwriters	Not Started	Certified Copy + Translation	Prior to pricing	Authorization of 30,000,000 new ordinary shares from genehmigtes Kapital; approval of underwriting agreement, deposit agreement, and listing
63	Q. German Corporate Approvals	Aufsichtsrat (Supervisory Board) Resolution — Approving New Share Issuance and Pre-Emptive Rights Exclusion	Bähr Stein Rechtsanwälte	Halcyon Aufsichtsrat (Prof. Dr. Anneliese Voss, Chair)	C&H / Underwriters	Not Started	Certified Copy + Translation	Prior to pricing	Consent to Bezugsrechtsausschluss (pre-emptive rights exclusion) for US offering
64	Q. German Corporate Approvals	Commercial Register Filing Confirmation — Registration of New Share Capital Increase	Bähr Stein Rechtsanwälte	Amtsgericht München	C&H / Underwriters	Not Started	Certified Extract	July 6, 2026 or as soon as practicable	HRB 217458; registration of capital increase from 215,000,000 to 245,000,000 shares
65	Q. German Corporate Approvals	Notarized Documents (as required under German law) — capital increase, Satzung amendment	Bähr Stein Rechtsanwälte	German Notary	C&H / Amtsgericht	Not Started	Original (notarized)	Prior to closing	Notarization of any required corporate filings under Aktiengesetz
66	R. Issuer Corporate Documents	Certified Copy of Satzung (Articles of Association) of Halcyon Semiconductor AG	Bähr Stein Rechtsanwälte	Halcyon	Underwriters / C&H	Not Started	Certified Copy + Translation	July 6, 2026 (closing)	Current Satzung as amended for capital increase
67	R. Issuer Corporate Documents	Certified Handelsregisterauszug (Commercial Register Extract) — Halcyon Semiconductor AG	Bähr Stein Rechtsanwälte	Amtsgericht München	Underwriters / C&H	Not Started	Certified Copy	Dated within 5 business days of closing	HRB 217458
68	R. Issuer Corporate Documents	Halcyon AG LEI Confirmation	Halcyon	Halcyon	C&H	Not Started	PDF	Prior to filing	LEI: 5299007KBTVZ3XQHGL48
69	S. Tax Documents	IRS Form W-8BEN-E — Halcyon Semiconductor AG (executed)	Calderwood & Harkness LLP (Leonard Cross)	Halcyon	Westbridge Securities LLC / Withholding Agent	Not Started	Original	Prior to closing	Entity classification; FATCA status; LEI 5299007KBTVZ3XQHGL48
70	S. Tax Documents	German Tax Residency Certificate — Halcyon Semiconductor AG	Bähr Stein Rechtsanwälte	German Tax Authorities (Finanzamt)	C&H / Meridian Trust	Not Started	Original / Certified Copy	Prior to closing	For treaty benefit documentation purposes
71	T. Insurance	D&O Insurance Binder / Certificate of Insurance (US-Compliant Program)	Clearwater D&O Insurance Brokers Ltd. (Emma Callister)	Clearwater / Carriers	Halcyon / C&H / Underwriters	Not Started	PDF	Prior to effectiveness	Total limits: $75,000,000; Primary: Thornhill Assurance plc ($15M); 1st Excess: Arcadian Indemnity Corp. ($20M xs $15M); 2nd Excess: Helmsman Re Ltd. ($20M xs $35M); 3rd Excess: Nordic Specialty Insurance SE ($20M xs $55M); Est. annual premium: $2,800,000
72	U. Transfer Agent	Transfer Agent Agreement — Crestfield Transfer Services Inc. — executed	Calderwood & Harkness LLP	Halcyon / Crestfield Transfer Services Inc. (Angela Moretti)	C&H / Meridian Trust	Not Started	Original + PDF	Prior to closing	Crestfield as transfer agent and registrar for ADSs
73	U. Transfer Agent	Specimen ADS Certificate — approved by Crestfield and Meridian Trust	Calderwood & Harkness LLP / Meridian Trust / Crestfield	Crestfield / Meridian Trust	C&H	Not Started	PDF	Prior to closing	Final form with CUSIP number
74	V. Investor Relations	Bridgeport Investor Relations LLC Engagement Letter — executed	Halcyon	Halcyon / Bridgeport Investor Relations LLC (Thomas Harding)	C&H (for file)	Not Started	PDF	Prior to roadshow	$35,000/month retainer; 12-month initial term beginning upon SEC filing

75	W. Financial Advisor	Ashton & Burke Advisory GmbH Engagement Letter — executed	Halcyon	Halcyon / Ashton & Burke Advisory GmbH (Lukas Frey)	C&H (for file)	Not Started	PDF	Executed prior to engagement	€2,500,000 flat fee + 0.10% success fee (~$900,000 / ~€835,000 at EUR/USD 1.078)
76	X. Greenshoe / Overallotment	Overallotment Option Notice — Form (if exercised)	Westbridge Securities LLC	Westbridge	Halcyon / C&H / Meridian Trust	Not Started	PDF / Email	Within 30 days of pricing (by July 31, 2026)	Up to 3,210,000 additional ADSs (15% of 21,400,000 base deal); if fully exercised at midpoint ~$42.06: ~$134,812,600 additional proceeds
77	X. Greenshoe / Overallotment	Confirmation of Deposit of Additional Ordinary Shares (if greenshoe exercised)	Bähr Stein / Halcyon / Meridian Trust	German Custodian	Meridian Trust / C&H	Not Started	SWIFT / Ashgrove Enterprises	Upon exercise	Up to 6,420,000 additional ordinary shares (3,210,000 ADSs × 2)
78	Y. Regulation S	Regulation S Selling Restrictions Notice / Legend	Calderwood & Harkness LLP	C&H	Underwriters	Not Started	PDF	Prior to pricing	Concurrent offshore offering outside the US in reliance on Regulation S; coordination with US registered offering
79	Z. Miscellaneous Closing Documents	Blue Sky / State Securities Law Survey and Exemption Memorandum	Calderwood & Harkness LLP	C&H	Underwriters / V&K	Not Started	PDF	Prior to effectiveness	Survey of US state securities (blue sky) law compliance for distribution of ADSs
80	Z. Miscellaneous Closing Documents	Closing Binder — Complete Set of Executed Closing Documents	Calderwood & Harkness LLP (Audrey Zhou)	C&H	All Parties	Not Started	PDF + Originals (bound volumes)	Post-closing	Master closing binder with all executed documents, opinions, certificates, and confirmations
81	Z. Miscellaneous Closing Documents	Press Release — Pricing Announcement	Bridgeport Investor Relations LLC / Halcyon	Halcyon / Bridgeport IR (Thomas Harding)	Wire services / Nasdaq / SEC (Form 6-K)	Not Started	PDF / Wire / EDGAR	July 1, 2026 (after pricing)	Announcement of IPO pricing, ADS price, number of ADSs
82	Z. Miscellaneous Closing Documents	Press Release — Closing Announcement	Bridgeport Investor Relations LLC / Halcyon	Halcyon / Bridgeport IR	Wire services / Nasdaq / SEC (Form 6-K)	Not Started	PDF / Wire / EDGAR	July 6, 2026 (after closing)	Announcement of closing and completion of offering
83	Z. Miscellaneous Closing Documents	Form 6-K Filing — Pricing Press Release	Calderwood & Harkness LLP	C&H	SEC via EDGAR	Not Started	EDGAR	Promptly after pricing	Furnishing of pricing press release to SEC

[sheet: Status Summary]

Category	Total Items	Not Started	In Progress	Draft Circulated	Final	Executed	Delivered	N/A	% Complete
A. Registration & SEC	5	3	2	0	0	0	0	0	0%
B. Underwriting Agreement & Pricing	4	4	0	0	0	0	0	0	0%
C. Deposit Agreement & ADR Documents	5	5	0	0	0	0	0	0	0%
D. Legal Opinions — C&H	3	3	0	0	0	0	0	0	0%
E. Legal Opinions — V&K	2	2	0	0	0	0	0	0	0%
F. Legal Opinions — Bähr Stein	2	2	0	0	0	0	0	0	0%
G. Legal Opinions — Prumvane Thornton	1	1	0	0	0	0	0	0	0%
H. Comfort Letters (B&W)	2	2	0	0	0	0	0	0	0%
I. Issuer Certificates	4	4	0	0	0	0	0	0	0%
J. Selling Shareholder Certificates & Documents	6	6	0	0	0	0	0	0	0%
K. Lock-Up Agreements	9	9	0	0	0	0	0	0	0%
L. Corporate Governance Documents	4	4	0	0	0	0	0	0	0%
M. Nasdaq Listing	2	2	0	0	0	0	0	0	0%
N. FINRA	2	2	0	0	0	0	0	0	0%
O. DTC / Settlement	5	5	0	0	0	0	0	0	0%
P. Funds Flow	5	5	0	0	0	0	0	0	0%
Q. German Corporate Approvals	4	4	0	0	0	0	0	0	0%
R. Issuer Corporate Documents	3	3	0	0	0	0	0	0	0%
S. Tax Documents	2	2	0	0	0	0	0	0	0%
T. Insurance	1	1	0	0	0	0	0	0	0%
U. Transfer Agent	2	2	0	0	0	0	0	0	0%
V. Investor Relations	1	1	0	0	0	0	0	0	0%
W. Financial Advisor	1	1	0	0	0	0	0	0	0%
X. Greenshoe / Overallotment	2	2	0	0	0	0	0	0	0%

Y. Regulation S	1	1	0	0%
Z. Miscellaneous Closing Documents	5	5	0	0%
TOTAL	83	81	2	0%

[sheet: Key Dates]

Milestone	Target Date	Status	Responsible Party	Notes
Engagement Letter Executed	January 12, 2026	Complete	Calderwood & Harkness LLP / Halcyon	Matter 1032-00003 opened
Organizational Meeting (All-Hands)	January 22, 2026	Complete	Calderwood & Harkness LLP	All parties attended
Due Diligence Commencement	January 27, 2026	Complete	Calderwood & Harkness LLP / Bähr Stein / Halcyon	DD request list circulated
First Draft F-1 Circulation	March 9, 2026	In Progress	Calderwood & Harkness LLP (Claire Dempsey)	Target date for initial draft
All-Parties Drafting Session	March 23–24, 2026	Not Started	All Counsel / Underwriters / Halcyon	Two-day session
Confidential Submission to SEC	April 14, 2026	Not Started	Calderwood & Harkness LLP	Draft Registration Statement on Form F-1; JOBS Act confidential treatment
SEC First Comment Letter (Estimated)	May 12, 2026	Not Started	SEC Division of Corporation Finance	Estimated ~4 weeks after submission
Amendment No. 1 Filing	May 26, 2026	Not Started	Calderwood & Harkness LLP	Responsive to SEC comments
Public Filing of Registration Statement	June 8, 2026	Not Started	Calderwood & Harkness LLP	Public EDGAR filing
SEC Declaration of Effectiveness	June 22, 2026	Not Started	SEC	Acceleration request to be filed by C&H
Roadshow Launch	June 23, 2026	Not Started	Westbridge Securities / Halcyon / Bridgeport IR	US and European investor roadshow
Pricing	July 1, 2026	Not Started	Westbridge Securities LLC / All Underwriters / C&H	Execution of Underwriting Agreement and Pricing Agreement; final ADS price set ($39.00–$45.00 range)
Closing / Settlement (T+2)	July 6, 2026	Not Started	All Parties	Delivery of all closing documents; wire transfers; ADS issuance via DTC
Greenshoe Expiration	July 31, 2026	Not Started	Westbridge Securities LLC	30 days post-pricing; up to 3,210,000 additional ADSs
Lock-Up Expiration	December 28, 2026	Not Started	All locked-up parties	180 days post-pricing; company, selling shareholders, officers, and directors

[sheet: Working Group Contacts]

Role	Organization	Contact Name	Title	Phone	Email	Address
Issuer — CEO	Halcyon Semiconductor AG	Dr. Friedrich Wendt	Vorstandsvorsitzender	+49 89 2180 4001	f.wendt@halcyon-semi.de	Maximilianstraße 72, 80539 Munich, Germany
Issuer — CFO	Halcyon Semiconductor AG	Katarina Dalmqvist	Finanzvorstand	+49 89 2180 4002	k.lindqvist@halcyon-semi.de	Maximilianstraße 72, 80539 Munich, Germany
Issuer — General Counsel	Halcyon Semiconductor AG	Wilhelm Ostermann	Chefjustitiar	+49 89 2180 4003	w.ostermann@halcyon-semi.de	Maximilianstraße 72, 80539 Munich, Germany
Issuer — COO	Halcyon Semiconductor AG	Ingrid Baumann	COO	+49 89 2180 4004	i.baumann@halcyon-semi.de	Maximilianstraße 72, 80539 Munich, Germany
Supervisory Board Chair	Halcyon Semiconductor AG	Prof. Dr. Anneliese Voss	Aufsichtsratsvorsitzende	+49 89 2180 4010	a.voss@halcyon-semi.de	Maximilianstraße 72, 80539 Munich, Germany
Selling Shareholder — Rheintal	Rheintal Industrieholding GmbH	Margarethe Wendt	Managing Director	+49 211 8640 100	m.wendt@rheintal-holding.de	Königsallee 60, 40212 Düsseldorf, Germany
Selling Shareholder — Kestrel	Kestrel Capital Partners AG	Henrik Sørensen	Managing Partner	+41 44 227 3500	h.sorensen@kestrelcap.ch	Bahnhofstrasse 36, 8001 Glenrock Assurance, Switzerland
US Counsel to Issuer — Responsible Partner	Calderwood & Harkness LLP	Vivienne St. Claire	Partner, Capital Markets	+1 212 558 4000	vstclaire@calderwoodharkness.com	One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Billing Partner	Calderwood & Harkness LLP	Robert Adeyemi	Partner, Capital Markets	+1 212 558 4010	radeyemi@calderwoodharkness.com	One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Lead Associate	Calderwood & Harkness LLP	Claire Dempsey	Lead Associate, Capital Markets	+1 212 558 4025	cdempsey@calderwoodharkness.com	One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Working Associate	Calderwood & Harkness LLP	Audrey Zhou	Associate, Capital Markets	+1 212 558 4032	azhou@calderwoodharkness.com	One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Tax Partner	Calderwood & Harkness LLP	Leonard Cross	Partner, Tax	+1 212 558 4050	lcross@calderwoodharkness.com	One Liberty Plaza, 42nd Floor, New York, NY 10006
Lead Bookrunner	Westbridge Securities LLC	Jonathan Hartwell	MD, Global ECM	+1 212 761 5000	jhartwell@westbridgesec.com	383 Madison Avenue, New York, NY 10179
Joint Bookrunner	Pinnacle Morgan & Co., Inc.	Sarah Okonkwo	Director, ECM	+1 212 270 6000	sokonkwo@pinnaclemorgan.com	200 Park Avenue, New York, NY 10166
Joint Bookrunner	Andover Barcliffe Group Inc.	David Reinhardt	MD, ECM	+1 212 526 7000	dreinhardt@andoverbarcliffe.com	1251 Avenue of the Americas, New York, NY 10020
Co-Manager	Northpointe Capital LLC	Lisa Cheng	VP, ECM	+1 212 449 1000	lcheng@northpointecap.com	140 Broadway, New York, NY 10005
US Counsel to Underwriters — Partner	Varen & Kessler LLP	Martin Ashford	Partner, Capital Markets	+1 212 450 4000	mashford@varenkessler.com	51 West 52nd Street, New York, NY 10019
US Counsel to Underwriters — Sr. Associate	Varen & Kessler LLP	Priya Ranganathan	Senior Associate	+1 212 450 4125	pranganathan@varenkessler.com	51 West 52nd Street, New York, NY 10019
German Counsel to Issuer — Partner	Bähr Stein Rechtsanwälte PartGmbB	Dr. Christoph Maurelban	Partner, Capital Markets	+49 69 7140 6100	c.feuerbach@bahrstein.de	Bockenheimer Landstraße 20, 60323 Frankfurt am Main, Germany
German Counsel to Issuer — Sr. Associate	Bähr Stein Rechtsanwälte PartGmbB	Johanna Weiß	Senior Associate	+49 69 7140 6150	j.weiss@bahrstein.de	Bockenheimer Landstraße 20, 60323 Frankfurt am Main, Germany
German Counsel to Underwriters	Prumvane Thornton LLP	Dr. Stefan Braun	Partner, Frankfurt Capital Markets	+49 69 9585 6000	sbraun@haldanethornton.com	Neue Mainzer Straße 52, 60311 Frankfurt am Main, Germany
Auditors — Munich	Blackmere & Whitfield GmbH WPG	Dieter Kaufmann	Wirtschaftsprüfer, Engagement Partner	+49 89 2903 6800	d.kaufmann@blackmerewhitfield.de	Ganghoferstraße 29, 80339 Munich, Germany
Auditors — New York (PCAOB)	Blackmere & Whitfield LLP	Graham Templeton	Partner	+1 212 909 5600	gtempleton@blackmerewhitfield.com	7 Times Square, New York, NY 10036
Depositary Bank	Meridian Trust Company, N.A.	Patricia Novak	VP, Depositary Receipts	+1 212 815 2000	pnovak@meridiantrust.com	101 Barclay Street, New York, NY 10286

Transfer Agent / ADS Registrar	Crestfield Transfer Services Inc.	Angela Moretti	Director, Corporate Actions	+1 718 921 8200	amoretti@crestfieldtransfer.com	6201 15th Avenue, Brooklyn, NY 11219
Financial Advisor to Issuer	Ashton & Burke Advisory GmbH	Lukas Frey	Managing Partner	+49 89 2620 7400	l.frey@ashtonburke.de	Theatinerstraße 11, 80333 Munich, Germany
US Investor Relations	Bridgeport Investor Relations LLC	Thomas Harding	SVP	+1 212 867 1768	tharding@bridgeportir.com	350 Fifth Avenue, Suite 6820, New York, NY 10118
D&O Insurance Broker	Clearwater D&O Insurance Brokers Ltd.	Emma Callister	VP, Financial Lines	+44 20 7623 4500	ecallister@clearwaterbrokers.co.uk	30 St Mary Axe, London EC3A 8BF, United Kingdom

[sheet: Cover]
Field | Value
Matter | Halcyon Semiconductor AG — US ADR IPO
C&H Matter Number | 1032-00003
Issuer | Halcyon Semiconductor Aktiengesellschaft
Issuer Jurisdiction | Federal Republic of Germany; HRB 217458, Amtsgericht München
Issuer HQ | Maximilianstraße 72, 80539 Munich, Germany
Existing Listing | Frankfurt Stock Exchange (FRA: HCY), Prime Standard
Target US Exchange | Nasdaq Global Select Market (Ticker: HCYN)
Registration Statement Form | Form F-1 (Securities Act of 1933)
ADR Registration | Form F-6
ADR Depositary | Meridian Trust Company, N.A.
ADS Ratio | 1 ADS = 2 Ordinary Shares (Stammaktien)
Offering Type | Level III ADR Program — Initial Public Offering of ADSs
Total ADSs Offered (Base Deal) | 21,400,000 ADSs
Primary ADSs (New Issuance) | 15,000,000 ADSs (30,000,000 new ordinary shares)
Secondary ADSs (Selling Shareholders) | 6,400,000 ADSs (12,800,000 existing ordinary shares)
Overallotment Option | Up to 3,210,000 additional ADSs (15% of base deal)
ADS Price Range | $39.00–$45.00 per ADS
Targeted Gross Proceeds (Base Deal) | $900,000,000
Maximum Total Offering Size (incl. Greenshoe) | ~$1,034,812,600
Gross Spread | 3.50% ($31,500,000 on base deal)
Net Proceeds to Issuer (Primary, Base) | $607,950,000
Net Proceeds to Selling Shareholders (Secondary, Base) | $260,550,000
Lead Left Bookrunner / Representative | Westbridge Securities LLC
Joint Bookrunners | Pinnacle Morgan & Co., Inc.; Andover Barcliffe Group Inc.
Co-Manager | Northpointe Capital LLC
US Counsel to Issuer | Calderwood & Harkness LLP
US Counsel to Underwriters | Varen & Kessler LLP
German Counsel to Issuer | Bähr Stein Rechtsanwälte PartGmbB
German Counsel to Underwriters | Prumvane Thornton LLP
Independent Auditors | Blackmere & Whitfield LLP / GmbH WPG
Transfer Agent / ADS Registrar | Crestfield Transfer Services Inc.
Target Pricing Date | July 1, 2026
Target Closing / Settlement Date (T+2) | July 6, 2026
Greenshoe Expiration | July 31, 2026
Lock-Up Expiration | December 28, 2026 (180 days from pricing)
Prepared By | Calderwood & Harkness LLP — Vivienne St. Claire / Claire Dempsey / Audrey Zhou
Last Updated | [Date]
Status Legend | Not Started / In Progress / Draft Circulated / Final / Executed / Delivered / N/A
[sheet: Closing Checklist]
Item No. | Category | Document / Deliverable Description | Responsible Party | Delivery From | Delivery To | Status | Delivery Method | Due Date | Notes / Comments
1 | A. Registration & SEC | Registration Statement on Form F-1 (as amended) — declared effective by SEC | Calderwood & Harkness LLP | SEC | All Parties | In Progress | EDGAR | June 22, 2026 (effectiveness target) | Target effectiveness date; acceleration request to be filed
2 | A. Registration & SEC | Registration Statement on Form F-6 — declared effective by SEC | Calderwood & Harkness LLP | SEC | All Parties | In Progress | EDGAR | June 22, 2026 | To be filed concurrently or shortly after F-1; registers ADSs issued by Meridian Trust Company, N.A.
3 | A. Registration & SEC | Acceleration Request Letter | Calderwood & Harkness LLP | C&H | SEC Division of Corporation Finance | Not Started | EDGAR | Prior to June 22, 2026 | Includes Tandy representations
4 | A. Registration & SEC | Final Prospectus (Rule 424(b) filing) | Calderwood & Harkness LLP | C&H | SEC via EDGAR | Not Started | EDGAR | Within required period after pricing (July 1, 2026) | To include final pricing, number of ADSs, and underwriting discount
5 | A. Registration & SEC | SEC CIK Number Assignment Confirmation | Calderwood & Harkness LLP | SEC / EDGAR | C&H / Halcyon | Not Started | Email / EDGAR | Prior to initial filing | CIK TBD upon EDGAR filing
6 | B. Underwriting Agreement & Pricing | Underwriting Agreement — executed by all parties | Calderwood & Harkness LLP / Varen & Kessler LLP | Halcyon / Selling Shareholders / Underwriters | All Parties | Not Started | Original + PDF | July 1, 2026 (pricing date) | Among Halcyon Semiconductor AG, Rheintal Industrieholding GmbH, Kestrel Capital Partners AG, and the several underwriters, with Westbridge Securities LLC as representative; New York law governed; gross spread 3.50%
7 | B. Underwriting Agreement & Pricing | Pricing Agreement / Terms Agreement — executed | Calderwood & Harkness LLP / Varen & Kessler LLP | Westbridge Securities LLC (as representative) | All Parties | Not Started | Original + PDF | July 1, 2026 (pricing date) | Sets final ADS price (within range $39.00–$45.00), number of firm ADSs per underwriter, and per-ADS discount
8 | B. Underwriting Agreement & Pricing | Schedule of Selling Shareholders to Underwriting Agreement | Calderwood & Harkness LLP | C&H | Underwriters | Not Started | PDF | July 1, 2026 | Rheintal: 8,500,000 shares / 4,250,000 ADSs; Kestrel: 4,300,000 shares / 2,150,000 ADSs; Total secondary: 6,400,000 ADSs
9 | B. Underwriting Agreement & Pricing | Underwriter Allocation Schedule (among syndicate members) | Westbridge Securities LLC | Westbridge | C&H / V&K / All Underwriters | Not Started | PDF | July 1, 2026 | Westbridge 40% / Pinnacle Morgan 30% / Andover Barcliffe 20% / Northpointe 10%
10 | C. Deposit Agreement & ADR Documents | Deposit Agreement — executed by all parties | Calderwood & Harkness LLP | Halcyon / Meridian Trust Company, N.A. | All Parties | Not Started | Original + PDF | July 6, 2026 (closing) | Among Halcyon Semiconductor AG, Meridian Trust Company, N.A. as Depositary, and holders/beneficial owners of ADSs; Delaware law governed; 1 ADS = 2 ordinary shares; depositary fee $0.05/ADS/annum
11 | C. Deposit Agreement & ADR Documents | Form of American Depositary Receipt (ADR) — final form (Exhibit to Deposit Agreement) | Calderwood & Harkness LLP | C&H / Meridian Trust | Filed as Exhibit | Not Started | Original + EDGAR | July 6, 2026 | Certificate form with CUSIP number; exhibit to Deposit Agreement
12 | C. Deposit Agreement & ADR Documents | Depositary Receipts Fee Schedule — final (Exhibit to Deposit Agreement) | Calderwood & Harkness LLP / Meridian Trust Company, N.A. | Meridian Trust | Filed as Exhibit | Not Started | PDF | July 6, 2026 | $0.05/ADS annual service fee; issuance/cancellation fees; reimbursement charges
13 | C. Deposit Agreement & ADR Documents | Letter Agreement — Halcyon and Meridian Trust (Pre-Effective Arrangements) — executed | Calderwood & Harkness LLP | Halcyon / Meridian Trust | Both Parties | Not Started | Original + PDF | Prior to closing | Pre-effective cooperation; German custodian appointment; ordinary share deposit mechanics; coordination
14 | C. Deposit Agreement & ADR Documents | German Custodian Appointment Letter — executed | Bähr Stein Rechtsanwälte / Meridian Trust Company, N.A. | Meridian Trust | German Custodian / Ashgrove Enterprises | Not Started | Original | Prior to closing | Sub-custodian in Germany for safekeeping of deposited ordinary shares under Deposit Agreement; Ashgrove Enterprises Banking AG settlement
15 | D. Legal Opinions — Issuer's US Counsel (Calderwood & Harkness LLP) | Opinion Letter — Validity of ADSs | Calderwood & Harkness LLP (Vivienne St. Claire) | C&H | Underwriters / Westbridge Securities LLC | Not Started | Original + PDF | July 6, 2026 (closing) | Due authorization and valid issuance of ADSs; binding nature of Deposit Agreement
16 | D. Legal Opinions — Issuer's US Counsel (Calderwood & Harkness LLP) | Negative Assurance Letter (10b-5 Letter) | Calderwood & Harkness LLP (Vivienne St. Claire) | C&H | Underwriters | Not Started | Original + PDF | July 6, 2026 (closing) | No untrue statement of material fact / no material omission in Registration Statement and Prospectus
17 | D. Legal Opinions — Issuer's US Counsel (Calderwood & Harkness LLP) | Tax Opinion — US Federal Income Tax Consequences | Calderwood & Harkness LLP (Leonard Cross) | C&H | Filed as Exhibit / Underwriters | Not Started | Original + EDGAR | July 6, 2026 (closing) | PFIC conclusions (not a PFIC); treaty-rate withholding analysis (15% under US-Germany treaty Article 10); characterization of ADS distributions
18 | E. Legal Opinions — Underwriters' US Counsel (Varen & Kessler LLP) | Opinion Letter — US Law Matters | Varen & Kessler LLP (Martin Ashford) | V&K | Underwriters | Not Started | Original + PDF | July 6, 2026 (closing) | Customary opinion covering Securities Act registration, no-conflicts, enforceability of underwriting agreement
19 | E. Legal Opinions — Underwriters' US Counsel (Varen & Kessler LLP) | Negative Assurance Letter (10b-5 Letter) | Varen & Kessler LLP (Martin Ashford) | V&K | Underwriters | Not Started | Original + PDF | July 6, 2026 (closing) | Underwriters' counsel negative assurance
20 | F. Legal Opinions — Issuer's German Counsel (Bähr Stein Rechtsanwälte) | Opinion Letter — German Law Matters (Issuer) | Bähr Stein Rechtsanwälte (Dr. Christoph Maurelban) | Bähr Stein | Underwriters / C&H | Not Started | Original + PDF | July 6, 2026 (closing) | Valid incorporation and existence of Halcyon AG; authorized capital; new share issuance; pre-emptive rights exclusion (Bezugsrechtsausschluss); corporate approvals
21 | F. Legal Opinions — Issuer's German Counsel (Bähr Stein Rechtsanwälte) | Opinion Letter — German Tax Matters | Bähr Stein Rechtsanwälte (Dr. Christoph Maurelban) | Bähr Stein | Underwriters / C&H | Not Started | Original + PDF | July 6, 2026 (closing) | German withholding tax (26.375% statutory rate); treaty benefit availability (15% for US holders)
22 | G. Legal Opinions — Underwriters' German Counsel (Prumvane Thornton LLP) | Opinion Letter — German Law Matters (Underwriters) | Prumvane Thornton LLP (Dr. Stefan Braun) | Prumvane Thornton | Underwriters | Not Started | Original + PDF | July 6, 2026 (closing) | Customary German law opinion for underwriters; corporate existence; enforceability under German law
23 | H. Comfort Letters (Blackmere & Whitfield) | Comfort Letter — Initial (SAS 72 / ISAE 3000) | Blackmere & Whitfield LLP (Graham Templeton, NY) / Blackmere & Whitfield GmbH WPG (Dieter Kaufmann, Munich) | B&W | Underwriters / C&H / V&K | Not Started | Original + PDF | Date of Registration Statement effectiveness or pricing | Covers IFRS financial data in prospectus; circle-up procedures; SAS 72 / ISAE 3000 standards
24 | H. Comfort Letters (Blackmere & Whitfield) | Comfort Letter — Bring-Down (as of closing date) | Blackmere & Whitfield LLP (Graham Templeton) / Blackmere & Whitfield GmbH WPG (Dieter Kaufmann) | B&W | Underwriters / C&H / V&K | Not Started | Original + PDF | July 6, 2026 (closing) | Bring-down to a date no more than 3 business days before closing
25 | I. Issuer Certificates | Officer's Certificate — CEO/CFO Certificate | Halcyon Semiconductor AG | Dr. Friedrich Wendt (CEO) and Katarina Dalmqvist (CFO) | Underwriters / C&H | Not Started | Original + PDF | July 6, 2026 (closing) | Certifies accuracy of representations and warranties in underwriting agreement; compliance with conditions to closing; absence of material adverse change
26 | I. Issuer Certificates | Secretary's / General Counsel's Certificate | Halcyon Semiconductor AG | Wilhelm Ostermann (General Counsel / Chefjustitiar) | Underwriters / C&H | Not Started | Original + PDF | July 6, 2026 (closing) | Certifies corporate authorizations (Vorstand and Aufsichtsrat resolutions); incumbency of officers; authenticity of organizational documents
27 | I. Issuer Certificates | Good Standing Certificate — Halcyon Semiconductor AG (Commercial Register Extract) | Bähr Stein Rechtsanwälte | Amtsgericht München | Underwriters / C&H | Not Started | Original / Certified Copy | July 6, 2026 (closing) | HRB 217458 Amtsgericht München; recent Handelsregisterauszug
28 | I. Issuer Certificates | Good Standing Certificate — Halcyon Semiconductor USA Inc. (Delaware) | Calderwood & Harkness LLP | Delaware Secretary of State | Underwriters / C&H | Not Started | Original / Certified Copy | July 6, 2026 (closing) | Delaware corporation; EIN 84-3927561
29 | J. Selling Shareholder Certificates & Documents | Selling Shareholder Certificate — Rheintal Industrieholding GmbH | Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte | Margarethe Wendt (Managing Director, Rheintal) | Underwriters / C&H | Not Started | Original + PDF | July 6, 2026 (closing) | Confirms accuracy of representations and warranties; authority to sell 8,500,000 shares (4,250,000 ADSs)
30 | J. Selling Shareholder Certificates & Documents | Selling Shareholder Certificate — Kestrel Capital Partners AG | Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte | Henrik Sørensen (Managing Partner, Kestrel) | Underwriters / C&H | Not Started | Original + PDF | July 6, 2026 (closing) | Confirms accuracy of representations and warranties; authority to sell 4,300,000 shares (2,150,000 ADSs)
31 | J. Selling Shareholder Certificates & Documents | Custody Agreement / Power of Attorney — Rheintal Industrieholding GmbH — executed | Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte | Rheintal (Margarethe Wendt) | Custodian / Meridian Trust | Not Started | Original | Prior to closing | Irrevocable POA authorizing custodian to deliver 8,500,000 ordinary shares to German custodian for ADS conversion
32 | J. Selling Shareholder Certificates & Documents | Custody Agreement / Power of Attorney — Kestrel Capital Partners AG — executed | Calderwood & Harkness LLP / Bähr Stein Rechtsanwälte | Kestrel (Henrik Sørensen) | Custodian / Meridian Trust | Not Started | Original | Prior to closing | Irrevocable POA authorizing custodian to deliver 4,300,000 ordinary shares to German custodian for ADS conversion
33 | J. Selling Shareholder Certificates & Documents | Selling Shareholder Questionnaire — Rheintal — completed | Calderwood & Harkness LLP | Rheintal | C&H / V&K | Not Started | PDF | Prior to effectiveness | Beneficial ownership, FINRA affiliations, material relationships
34 | J. Selling Shareholder Certificates & Documents | Selling Shareholder Questionnaire — Kestrel — completed | Calderwood & Harkness LLP | Kestrel | C&H / V&K | Not Started | PDF | Prior to effectiveness | Beneficial ownership, FINRA affiliations, material relationships
35 | K. Lock-Up Agreements | Lock-Up Agreement — Dr. Friedrich Wendt (CEO) — executed | Calderwood & Harkness LLP | Dr. Friedrich Wendt | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing (July 1, 2026) | 180-day lock-up from pricing; restricts transfer, hedging, and pledging; consent agent: Westbridge Securities LLC
36 | K. Lock-Up Agreements | Lock-Up Agreement — Katarina Dalmqvist (CFO) — executed | Calderwood & Harkness LLP | Katarina Dalmqvist | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up
37 | K. Lock-Up Agreements | Lock-Up Agreement — Dr. Marcus Helder (CTO) — executed | Calderwood & Harkness LLP | Dr. Marcus Helder | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up
38 | K. Lock-Up Agreements | Lock-Up Agreement — Ingrid Baumann (COO) — executed | Calderwood & Harkness LLP | Ingrid Baumann | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up
39 | K. Lock-Up Agreements | Lock-Up Agreement — Wilhelm Ostermann (General Counsel) — executed | Calderwood & Harkness LLP | Wilhelm Ostermann | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up
40 | K. Lock-Up Agreements | Lock-Up Agreement — Prof. Dr. Anneliese Voss (Supervisory Board Chair) — executed | Calderwood & Harkness LLP | Prof. Dr. Anneliese Voss | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up
41 | K. Lock-Up Agreements | Lock-Up Agreement — Rheintal Industrieholding GmbH (Selling Shareholder) — executed | Calderwood & Harkness LLP / Bähr Stein | Margarethe Wendt for Rheintal | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up on retained shares (39,445,000 shares post-IPO)
42 | K. Lock-Up Agreements | Lock-Up Agreement — Kestrel Capital Partners AG (Selling Shareholder) — executed | Calderwood & Harkness LLP / Bähr Stein | Henrik Sørensen for Kestrel | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day lock-up on retained shares (16,555,000 shares post-IPO)
43 | K. Lock-Up Agreements | Lock-Up Agreement — Halcyon Semiconductor AG (Company Lock-Up) — executed | Calderwood & Harkness LLP | Halcyon (Dr. Friedrich Wendt / Katarina Dalmqvist) | Westbridge Securities LLC | Not Started | Original + PDF | Prior to pricing | 180-day company lock-up; lock-up expiration December 28, 2026
44 | L. Corporate Governance Documents | Code of Business Conduct and Ethics (US-Compliant) — adopted by Halcyon Board | Calderwood & Harkness LLP | Halcyon | Nasdaq / SEC (filed as exhibit) | Not Started | PDF / EDGAR | Prior to effectiveness | Nasdaq and SOX-compliant code
45 | L. Corporate Governance Documents | Audit Committee Charter (US-Compliant) — adopted | Calderwood & Harkness LLP | Halcyon | Nasdaq / SEC | Not Started | PDF / EDGAR | Prior to effectiveness | Compliant with Nasdaq Rule 5605(c) and Exchange Act Rule 10A-3
46 | L. Corporate Governance Documents | Whistleblower Policy (US-Compliant) — adopted | Calderwood & Harkness LLP | Halcyon | Filed / Internal | Not Started | PDF | Prior to effectiveness | SOX Section 301 compliant
47 | L. Corporate Governance Documents | Nasdaq Corporate Governance Exemption Notice — filed | Calderwood & Harkness LLP | Halcyon | Nasdaq | Not Started | Nasdaq submission | Prior to listing | Disclosure of reliance on German home-country practices under Nasdaq Rule 5615(a)(3)
48 | M. Nasdaq Listing | Nasdaq Listing Application (Nasdaq Global Select Market) — submitted and approved | Calderwood & Harkness LLP / Halcyon | Halcyon | Nasdaq | Not Started | Nasdaq submission | Prior to effectiveness | Proposed ticker: HCYN; Nasdaq Global Select Market
49 | M. Nasdaq Listing | Nasdaq Listing Approval Letter | Nasdaq | Nasdaq | Halcyon / C&H / Underwriters | Not Started | Email / Letter | Prior to pricing | Conditional approval subject to effectiveness and meeting all conditions
50 | N. FINRA | FINRA No-Objections Letter (Corporate Financing Department) | Varen & Kessler LLP | FINRA | Underwriters / C&H / V&K | Not Started | Email / Letter | Prior to effectiveness | FINRA review of underwriting compensation and arrangements; filed by underwriters' counsel
51 | N. FINRA | FINRA Filing — Underwriting Compensation and Arrangements | Varen & Kessler LLP / Westbridge Securities LLC | V&K / Westbridge | FINRA | Not Started | FINRA filing system | Prior to effectiveness | Disclosure of gross spread (3.50% / $31,500,000), allocation among syndicate, and any other items of value
52 | O. DTC / Settlement | DTC Eligibility Confirmation for ADSs | Meridian Trust Company, N.A. / Crestfield Transfer Services Inc. | Meridian Trust / Crestfield (Angela Moretti) | Underwriters / C&H | Not Started | Letter / Email | Prior to closing | ADSs to be eligible for book-entry transfer through DTC
53 | O. DTC / Settlement | Ashgrove Enterprises / German Custodian Settlement Instructions | Bähr Stein Rechtsanwälte / Meridian Trust Company, N.A. | Meridian Trust / German Custodian | All Parties | Not Started | Email / Letter | Prior to closing | Settlement coordination between Ashgrove Enterprises Banking AG and DTC for ordinary share deposit and ADS issuance
54 | O. DTC / Settlement | Confirmation of Deposit of Primary Ordinary Shares (30,000,000 shares) with German Custodian | Bähr Stein Rechtsanwälte / Halcyon | German Custodian | Meridian Trust / C&H | Not Started | SWIFT / Brightwater Enterprises | July 6, 2026 (closing) | New ordinary shares deposited with sub-custodian in Germany for ADS issuance
55 | O. DTC / Settlement | Confirmation of Deposit of Secondary Ordinary Shares (12,800,000 shares) with German Custodian | Bähr Stein Rechtsanwälte / Selling Shareholders | German Custodian | Meridian Trust / C&H | Not Started | SWIFT / Brightwater Enterprises | July 6, 2026 (closing) | Rheintal: 8,500,000 shares; Kestrel: 4,300,000 shares
56 | O. DTC / Settlement | Meridian Trust Confirmation of Issuance of ADSs (21,400,000 ADSs base deal) | Meridian Trust Company, N.A. (Patricia Novak) | Meridian Trust | Underwriters / DTC | Not Started | DTC / Letter | July 6, 2026 (closing) | Issuance via DTC book-entry
57 | P. Funds Flow | Funds Flow Memorandum — executed/agreed | Calderwood & Harkness LLP | C&H | All Parties | Not Started | PDF | Prior to closing | Wire instructions for payment of aggregate purchase price; allocation of proceeds between issuer ($630M less spread) and selling shareholders ($270M less spread); payment to underwriters
58 | P. Funds Flow | Wire Transfer Instructions — Halcyon Semiconductor AG | Halcyon (Katarina Dalmqvist, CFO) | Halcyon | Westbridge Securities LLC / C&H | Not Started | PDF / Email | Prior to closing | Issuer bank account details for receipt of ~$607,950,000 net primary proceeds
59 | P. Funds Flow | Wire Transfer Instructions — Rheintal Industrieholding GmbH | Rheintal (Margarethe Wendt) | Rheintal | Westbridge Securities LLC / C&H | Not Started | PDF / Email | Prior to closing | Selling shareholder bank account for receipt of pro rata net secondary proceeds
60 | P. Funds Flow | Wire Transfer Instructions — Kestrel Capital Partners AG | Kestrel (Henrik Sørensen) | Kestrel | Westbridge Securities LLC / C&H | Not Started | PDF / Email | Prior to closing | Selling shareholder bank account for receipt of pro rata net secondary proceeds
61 | P. Funds Flow | Confirmation of Wire Transfers — Closing Funds Settlement | Westbridge Securities LLC | Westbridge | C&H / Halcyon / Selling Shareholders | Not Started | Email / SWIFT | July 6, 2026 (closing) | Confirmation that all funds have been wired and received
62 | Q. German Corporate Approvals | Vorstand Resolution — Approving US IPO, New Share Issuance, and Related Agreements | Bähr Stein Rechtsanwälte | Halcyon Vorstand | C&H / Underwriters | Not Started | Certified Copy + Translation | Prior to pricing | Authorization of 30,000,000 new ordinary shares from genehmigtes Kapital; approval of underwriting agreement, deposit agreement, and listing
63 | Q. German Corporate Approvals | Aufsichtsrat (Supervisory Board) Resolution — Approving New Share Issuance and Pre-Emptive Rights Exclusion | Bähr Stein Rechtsanwälte | Halcyon Aufsichtsrat (Prof. Dr. Anneliese Voss, Chair) | C&H / Underwriters | Not Started | Certified Copy + Translation | Prior to pricing | Consent to Bezugsrechtsausschluss (pre-emptive rights exclusion) for US offering
64 | Q. German Corporate Approvals | Commercial Register Filing Confirmation — Registration of New Share Capital Increase | Bähr Stein Rechtsanwälte | Amtsgericht München | C&H / Underwriters | Not Started | Certified Extract | July 6, 2026 or as soon as practicable | HRB 217458; registration of capital increase from 215,000,000 to 245,000,000 shares
65 | Q. German Corporate Approvals | Notarized Documents (as required under German law) — capital increase, Satzung amendment | Bähr Stein Rechtsanwälte | German Notary | C&H / Amtsgericht | Not Started | Original (notarized) | Prior to closing | Notarization of any required corporate filings under Aktiengesetz
66 | R. Issuer Corporate Documents | Certified Copy of Satzung (Articles of Association) of Halcyon Semiconductor AG | Bähr Stein Rechtsanwälte | Halcyon | Underwriters / C&H | Not Started | Certified Copy + Translation | July 6, 2026 (closing) | Current Satzung as amended for capital increase
67 | R. Issuer Corporate Documents | Certified Handelsregisterauszug (Commercial Register Extract) — Halcyon Semiconductor AG | Bähr Stein Rechtsanwälte | Amtsgericht München | Underwriters / C&H | Not Started | Certified Copy | Dated within 5 business days of closing | HRB 217458
68 | R. Issuer Corporate Documents | Halcyon AG LEI Confirmation | Halcyon | Halcyon | C&H | Not Started | PDF | Prior to filing | LEI: 5299007KBTVZ3XQHGL48
69 | S. Tax Documents | IRS Form W-8BEN-E — Halcyon Semiconductor AG (executed) | Calderwood & Harkness LLP (Leonard Cross) | Halcyon | Westbridge Securities LLC / Withholding Agent | Not Started | Original | Prior to closing | Entity classification; FATCA status; LEI 5299007KBTVZ3XQHGL48
70 | S. Tax Documents | German Tax Residency Certificate — Halcyon Semiconductor AG | Bähr Stein Rechtsanwälte | German Tax Authorities (Finanzamt) | C&H / Meridian Trust | Not Started | Original / Certified Copy | Prior to closing | For treaty benefit documentation purposes
71 | T. Insurance | D&O Insurance Binder / Certificate of Insurance (US-Compliant Program) | Clearwater D&O Insurance Brokers Ltd. (Emma Callister) | Clearwater / Carriers | Halcyon / C&H / Underwriters | Not Started | PDF | Prior to effectiveness | Total limits: $75,000,000; Primary: Thornhill Assurance plc ($15M); 1st Excess: Arcadian Indemnity Corp. ($20M xs $15M); 2nd Excess: Helmsman Re Ltd. ($20M xs $35M); 3rd Excess: Nordic Specialty Insurance SE ($20M xs $55M); Est. annual premium: $2,800,000
72 | U. Transfer Agent | Transfer Agent Agreement — Crestfield Transfer Services Inc. — executed | Calderwood & Harkness LLP | Halcyon / Crestfield Transfer Services Inc. (Angela Moretti) | C&H / Meridian Trust | Not Started | Original + PDF | Prior to closing | Crestfield as transfer agent and registrar for ADSs
73 | U. Transfer Agent | Specimen ADS Certificate — approved by Crestfield and Meridian Trust | Calderwood & Harkness LLP / Meridian Trust / Crestfield | Crestfield / Meridian Trust | C&H | Not Started | PDF | Prior to closing | Final form with CUSIP number
74 | V. Investor Relations | Bridgeport Investor Relations LLC Engagement Letter — executed | Halcyon | Halcyon / Bridgeport Investor Relations LLC (Thomas Harding) | C&H (for file) | Not Started | PDF | Prior to roadshow | $35,000/month retainer; 12-month initial term beginning upon SEC filing
75 | W. Financial Advisor | Ashton & Burke Advisory GmbH Engagement Letter — executed | Halcyon | Halcyon / Ashton & Burke Advisory GmbH (Lukas Frey) | C&H (for file) | Not Started | PDF | Executed prior to engagement | €2,500,000 flat fee + 0.10% success fee (~$900,000 / ~€835,000 at EUR/USD 1.078)
76 | X. Greenshoe / Overallotment | Overallotment Option Notice — Form (if exercised) | Westbridge Securities LLC | Westbridge | Halcyon / C&H / Meridian Trust | Not Started | PDF / Email | Within 30 days of pricing (by July 31, 2026) | Up to 3,210,000 additional ADSs (15% of 21,400,000 base deal); if fully exercised at midpoint ~$42.06: ~$134,812,600 additional proceeds
77 | X. Greenshoe / Overallotment | Confirmation of Deposit of Additional Ordinary Shares (if greenshoe exercised) | Bähr Stein / Halcyon / Meridian Trust | German Custodian | Meridian Trust / C&H | Not Started | SWIFT / Ashgrove Enterprises | Upon exercise | Up to 6,420,000 additional ordinary shares (3,210,000 ADSs × 2)
78 | Y. Regulation S | Regulation S Selling Restrictions Notice / Legend | Calderwood & Harkness LLP | C&H | Underwriters | Not Started | PDF | Prior to pricing | Concurrent offshore offering outside the US in reliance on Regulation S; coordination with US registered offering
79 | Z. Miscellaneous Closing Documents | Blue Sky / State Securities Law Survey and Exemption Memorandum | Calderwood & Harkness LLP | C&H | Underwriters / V&K | Not Started | PDF | Prior to effectiveness | Survey of US state securities (blue sky) law compliance for distribution of ADSs
80 | Z. Miscellaneous Closing Documents | Closing Binder — Complete Set of Executed Closing Documents | Calderwood & Harkness LLP (Audrey Zhou) | C&H | All Parties | Not Started | PDF + Originals (bound volumes) | Post-closing | Master closing binder with all executed documents, opinions, certificates, and confirmations
81 | Z. Miscellaneous Closing Documents | Press Release — Pricing Announcement | Bridgeport Investor Relations LLC / Halcyon | Halcyon / Bridgeport IR (Thomas Harding) | Wire services / Nasdaq / SEC (Form 6-K) | Not Started | PDF / Wire / EDGAR | July 1, 2026 (after pricing) | Announcement of IPO pricing, ADS price, number of ADSs
82 | Z. Miscellaneous Closing Documents | Press Release — Closing Announcement | Bridgeport Investor Relations LLC / Halcyon | Halcyon / Bridgeport IR | Wire services / Nasdaq / SEC (Form 6-K) | Not Started | PDF / Wire / EDGAR | July 6, 2026 (after closing) | Announcement of closing and completion of offering
83 | Z. Miscellaneous Closing Documents | Form 6-K Filing — Pricing Press Release | Calderwood & Harkness LLP | C&H | SEC via EDGAR | Not Started | EDGAR | Promptly after pricing | Furnishing of pricing press release to SEC
[sheet: Status Summary]
Category | Total Items | Not Started | In Progress | Draft Circulated | Final | Executed | Delivered | N/A | % Complete
A. Registration & SEC | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0%
B. Underwriting Agreement & Pricing | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
C. Deposit Agreement & ADR Documents | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
D. Legal Opinions — C&H | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
E. Legal Opinions — V&K | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
F. Legal Opinions — Bähr Stein | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
G. Legal Opinions — Prumvane Thornton | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
H. Comfort Letters (B&W) | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
I. Issuer Certificates | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
J. Selling Shareholder Certificates & Documents | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
K. Lock-Up Agreements | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
L. Corporate Governance Documents | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
M. Nasdaq Listing | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
N. FINRA | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
O. DTC / Settlement | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
P. Funds Flow | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
Q. German Corporate Approvals | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
R. Issuer Corporate Documents | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
S. Tax Documents | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
T. Insurance | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
U. Transfer Agent | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
V. Investor Relations | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
W. Financial Advisor | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
X. Greenshoe / Overallotment | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
Y. Regulation S | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
Z. Miscellaneous Closing Documents | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0%
TOTAL | 83 | 81 | 2 | 0 | 0 | 0 | 0 | 0 | 0%
[sheet: Key Dates]
Milestone | Target Date | Status | Responsible Party | Notes
Engagement Letter Executed | January 12, 2026 | Complete | Calderwood & Harkness LLP / Halcyon | Matter 1032-00003 opened
Organizational Meeting (All-Hands) | January 22, 2026 | Complete | Calderwood & Harkness LLP | All parties attended
Due Diligence Commencement | January 27, 2026 | Complete | Calderwood & Harkness LLP / Bähr Stein / Halcyon | DD request list circulated
First Draft F-1 Circulation | March 9, 2026 | In Progress | Calderwood & Harkness LLP (Claire Dempsey) | Target date for initial draft
All-Parties Drafting Session | March 23–24, 2026 | Not Started | All Counsel / Underwriters / Halcyon | Two-day session
Confidential Submission to SEC | April 14, 2026 | Not Started | Calderwood & Harkness LLP | Draft Registration Statement on Form F-1; JOBS Act confidential treatment
SEC First Comment Letter (Estimated) | May 12, 2026 | Not Started | SEC Division of Corporation Finance | Estimated ~4 weeks after submission
Amendment No. 1 Filing | May 26, 2026 | Not Started | Calderwood & Harkness LLP | Responsive to SEC comments
Public Filing of Registration Statement | June 8, 2026 | Not Started | Calderwood & Harkness LLP | Public EDGAR filing
SEC Declaration of Effectiveness | June 22, 2026 | Not Started | SEC | Acceleration request to be filed by C&H
Roadshow Launch | June 23, 2026 | Not Started | Westbridge Securities / Halcyon / Bridgeport IR | US and European investor roadshow
Pricing | July 1, 2026 | Not Started | Westbridge Securities LLC / All Underwriters / C&H | Execution of Underwriting Agreement and Pricing Agreement; final ADS price set ($39.00–$45.00 range)
Closing / Settlement (T+2) | July 6, 2026 | Not Started | All Parties | Delivery of all closing documents; wire transfers; ADS issuance via DTC
Greenshoe Expiration | July 31, 2026 | Not Started | Westbridge Securities LLC | 30 days post-pricing; up to 3,210,000 additional ADSs
Lock-Up Expiration | December 28, 2026 | Not Started | All locked-up parties | 180 days post-pricing; company, selling shareholders, officers, and directors
[sheet: Working Group Contacts]
Role | Organization | Contact Name | Title | Phone | Email | Address
Issuer — CEO | Halcyon Semiconductor AG | Dr. Friedrich Wendt | Vorstandsvorsitzender | +49 89 2180 4001 | f.wendt@halcyon-semi.de | Maximilianstraße 72, 80539 Munich, Germany
Issuer — CFO | Halcyon Semiconductor AG | Katarina Dalmqvist | Finanzvorstand | +49 89 2180 4002 | k.lindqvist@halcyon-semi.de | Maximilianstraße 72, 80539 Munich, Germany
Issuer — General Counsel | Halcyon Semiconductor AG | Wilhelm Ostermann | Chefjustitiar | +49 89 2180 4003 | w.ostermann@halcyon-semi.de | Maximilianstraße 72, 80539 Munich, Germany
Issuer — COO | Halcyon Semiconductor AG | Ingrid Baumann | COO | +49 89 2180 4004 | i.baumann@halcyon-semi.de | Maximilianstraße 72, 80539 Munich, Germany
Supervisory Board Chair | Halcyon Semiconductor AG | Prof. Dr. Anneliese Voss | Aufsichtsratsvorsitzende | +49 89 2180 4010 | a.voss@halcyon-semi.de | Maximilianstraße 72, 80539 Munich, Germany
Selling Shareholder — Rheintal | Rheintal Industrieholding GmbH | Margarethe Wendt | Managing Director | +49 211 8640 100 | m.wendt@rheintal-holding.de | Königsallee 60, 40212 Düsseldorf, Germany
Selling Shareholder — Kestrel | Kestrel Capital Partners AG | Henrik Sørensen | Managing Partner | +41 44 227 3500 | h.sorensen@kestrelcap.ch | Bahnhofstrasse 36, 8001 Glenrock Assurance, Switzerland
US Counsel to Issuer — Responsible Partner | Calderwood & Harkness LLP | Vivienne St. Claire | Partner, Capital Markets | +1 212 558 4000 | vstclaire@calderwoodharkness.com | One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Billing Partner | Calderwood & Harkness LLP | Robert Adeyemi | Partner, Capital Markets | +1 212 558 4010 | radeyemi@calderwoodharkness.com | One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Lead Associate | Calderwood & Harkness LLP | Claire Dempsey | Lead Associate, Capital Markets | +1 212 558 4025 | cdempsey@calderwoodharkness.com | One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Working Associate | Calderwood & Harkness LLP | Audrey Zhou | Associate, Capital Markets | +1 212 558 4032 | azhou@calderwoodharkness.com | One Liberty Plaza, 42nd Floor, New York, NY 10006
US Counsel to Issuer — Tax Partner | Calderwood & Harkness LLP | Leonard Cross | Partner, Tax | +1 212 558 4050 | lcross@calderwoodharkness.com | One Liberty Plaza, 42nd Floor, New York, NY 10006
Lead Bookrunner | Westbridge Securities LLC | Jonathan Hartwell | MD, Global ECM | +1 212 761 5000 | jhartwell@westbridgesec.com | 383 Madison Avenue, New York, NY 10179
Joint Bookrunner | Pinnacle Morgan & Co., Inc. | Sarah Okonkwo | Director, ECM | +1 212 270 6000 | sokonkwo@pinnaclemorgan.com | 200 Park Avenue, New York, NY 10166
Joint Bookrunner | Andover Barcliffe Group Inc. | David Reinhardt | MD, ECM | +1 212 526 7000 | dreinhardt@andoverbarcliffe.com | 1251 Avenue of the Americas, New York, NY 10020
Co-Manager | Northpointe Capital LLC | Lisa Cheng | VP, ECM | +1 212 449 1000 | lcheng@northpointecap.com | 140 Broadway, New York, NY 10005
US Counsel to Underwriters — Partner | Varen & Kessler LLP | Martin Ashford | Partner, Capital Markets | +1 212 450 4000 | mashford@varenkessler.com | 51 West 52nd Street, New York, NY 10019
US Counsel to Underwriters — Sr. Associate | Varen & Kessler LLP | Priya Ranganathan | Senior Associate | +1 212 450 4125 | pranganathan@varenkessler.com | 51 West 52nd Street, New York, NY 10019
German Counsel to Issuer — Partner | Bähr Stein Rechtsanwälte PartGmbB | Dr. Christoph Maurelban | Partner, Capital Markets | +49 69 7140 6100 | c.feuerbach@bahrstein.de | Bockenheimer Landstraße 20, 60323 Frankfurt am Main, Germany
German Counsel to Issuer — Sr. Associate | Bähr Stein Rechtsanwälte PartGmbB | Johanna Weiß | Senior Associate | +49 69 7140 6150 | j.weiss@bahrstein.de | Bockenheimer Landstraße 20, 60323 Frankfurt am Main, Germany
German Counsel to Underwriters | Prumvane Thornton LLP | Dr. Stefan Braun | Partner, Frankfurt Capital Markets | +49 69 9585 6000 | sbraun@haldanethornton.com | Neue Mainzer Straße 52, 60311 Frankfurt am Main, Germany
Auditors — Munich | Blackmere & Whitfield GmbH WPG | Dieter Kaufmann | Wirtschaftsprüfer, Engagement Partner | +49 89 2903 6800 | d.kaufmann@blackmerewhitfield.de | Ganghoferstraße 29, 80339 Munich, Germany
Auditors — New York (PCAOB) | Blackmere & Whitfield LLP | Graham Templeton | Partner | +1 212 909 5600 | gtempleton@blackmerewhitfield.com | 7 Times Square, New York, NY 10036
Depositary Bank | Meridian Trust Company, N.A. | Patricia Novak | VP, Depositary Receipts | +1 212 815 2000 | pnovak@meridiantrust.com | 101 Barclay Street, New York, NY 10286
Transfer Agent / ADS Registrar | Crestfield Transfer Services Inc. | Angela Moretti | Director, Corporate Actions | +1 718 921 8200 | amoretti@crestfieldtransfer.com | 6201 15th Avenue, Brooklyn, NY 11219
Financial Advisor to Issuer | Ashton & Burke Advisory GmbH | Lukas Frey | Managing Partner | +49 89 2620 7400 | l.frey@ashtonburke.de | Theatinerstraße 11, 80333 Munich, Germany
US Investor Relations | Bridgeport Investor Relations LLC | Thomas Harding | SVP | +1 212 867 1768 | tharding@bridgeportir.com | 350 Fifth Avenue, Suite 6820, New York, NY 10118
D&O Insurance Broker | Clearwater D&O Insurance Brokers Ltd. | Emma Callister | VP, Financial Lines | +44 20 7623 4500 | ecallister@clearwaterbrokers.co.uk | 30 St Mary Axe, London EC3A 8BF, United Kingdom

[sheet: Cover]

Record

Parties

Dates

Amounts