SEC Form 4 · accession 0002041625-26-000004

Standard Nuclear, Inc. · STDN

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

10% Owner

Period of report

Jul 17, 2026

Accepted (ET)

Jul 23, 2026 · 4:56 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0002086716

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F1,F2,F3	Jul 17, 2026	C	14,000,000	—	A	14,000,000	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series Seed-1 Preferred Stock^F2,F3,F1	—	Jul 17, 2026	C	14,000,000	D	—	—	Class A Common Stock	14,000,000	0	D

F1The Series Seed-1 Preferred Stock automatically converted into Class A Common Stock of the Issuer on a 1-for-1 basis immediately prior to the closing of the Issuer's initial public offering. The securities had no expiration date.
F2ST-1014 Fund I, a series of Fundomo Syndicates, LP ("ST-1014 Fund I"), may be considered an affiliate of Fundomo SN-001, LP ("SN-001"), Fundomo SN-002, LP ("SN-002"), Fundomo SN-001 GP, LLC ("SN-001 GP"), and Fundomo SN-002 GP, LLC ("SN-002 GP"), but voting and dispositive power over the shares held directly by ST-1014 Fund I has been delegated on an irrevocable basis to an unaffiliated third-party investment adviser pursuant to the terms of ST-1014 Fund I's limited partnership agreement, and none of SN-001, SN-002, SN-001 GP, or SN-002 GP has voting or dispositive power over such shares.
F3The reporting person disclaims beneficial ownership of the reported securities (except to the extent of such person's pecuniary interest in such securities). The filing of this statement by the reporting person shall not be deemed an admission that such person is, for purposes of Section 16 of the Securities and Exchange Act of 1934 or otherwise, the beneficial owner of any equity securities covered by this statement.