STOCK TITAN

Standard Nuclear (STDN) holder converts 14M preferred into common stock

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

ST-1014 Fund I, a series of Fundomo Syndicates, LP, a more-than-10% owner of Standard Nuclear, Inc., converted 14,000,000 shares of Series Seed-1 Preferred Stock into 14,000,000 shares of Class A Common Stock on a 1-for-1 basis immediately prior to the closing of Standard Nuclear’s initial public offering. After the conversion, the fund held 14,000,000 Class A Common shares and no Series Seed-1 Preferred shares. Voting and dispositive power over these shares has been irrevocably delegated to an unaffiliated third-party investment adviser, and the reporting person disclaims beneficial ownership except to the extent of its pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider ST-1014 Fund I, a series of Fundomo Syndicates, LP
Role 10% Owner
Type Security Shares Price Value
Conversion Series Seed-1 Preferred Stock F1, F2, F3 14,000,000 $0.00 $0.00
Conversion Class A Common Stock F1, F2, F3 14,000,000 -- --
Holdings After Transaction: Series Seed-1 Preferred Stock — 0 shares (Direct); Class A Common Stock — 14,000,000 shares (Direct)
Footnotes (3)
  1. F1. The 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.
  2. F2. ST-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.
  3. F3. The 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.
Preferred shares converted 14,000,000 shares Series Seed-1 Preferred Stock converted into Class A Common Stock on July 17, 2026
Common shares received 14,000,000 shares Class A Common Stock acquired upon 1-for-1 conversion of Series Seed-1 Preferred Stock
Common shares held after 14,000,000 shares Total Class A Common Stock directly held by ST-1014 Fund I following the conversion
Conversion ratio 1-for-1 Series Seed-1 Preferred Stock automatically converted into Class A Common Stock on a 1-for-1 basis
Transaction date 2026-07-17 Date of automatic conversion immediately prior to closing of initial public offering
Series Seed-1 Preferred Stock financial
"The Series Seed-1 Preferred Stock automatically converted into Class A Common Stock"
Class A Common Stock financial
"converted into Class A Common Stock of the Issuer on a 1-for-1 basis"
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.
initial public offering financial
"immediately prior to the closing of the Issuer's initial public offering"
An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.
voting and dispositive power financial
"voting and dispositive power over the shares held directly by ST-1014 Fund I"
beneficial ownership financial
"The reporting person disclaims beneficial ownership of the reported securities"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates

FAQ

What insider transaction did ST-1014 Fund I report for Standard Nuclear (STDN)?

ST-1014 Fund I reported converting 14,000,000 shares of Series Seed-1 Preferred Stock into 14,000,000 shares of Class A Common Stock on July 17, 2026, immediately before Standard Nuclear’s initial public offering, leaving it with 14,000,000 Class A shares and no preferred shares.

How many Standard Nuclear (STDN) common shares does ST-1014 Fund I hold after this Form 4?

Following the reported conversion, ST-1014 Fund I holds 14,000,000 shares of Standard Nuclear Class A Common Stock. Its prior 14,000,000 Series Seed-1 Preferred shares automatically converted 1-for-1 into common stock immediately before the company’s initial public offering closed.

Did the Form 4 for Standard Nuclear (STDN) involve a net purchase or sale of shares?

The Form 4 reflects a conversion, not a market purchase or sale. 14,000,000 preferred shares were exchanged 1-for-1 into 14,000,000 common shares, so the economic exposure stayed the same while the security type changed ahead of the IPO.

What is the conversion ratio for Standard Nuclear (STDN) Series Seed-1 Preferred reported on this Form 4?

The Series Seed-1 Preferred Stock converted into Class A Common Stock on a 1-for-1 basis. Specifically, 14,000,000 preferred shares became 14,000,000 common shares immediately prior to the closing of Standard Nuclear’s initial public offering, with no stated expiration date on the preferred.

Who controls voting and dispositive power over the Standard Nuclear (STDN) shares held by ST-1014 Fund I?

Voting and dispositive power over the shares held by ST-1014 Fund I has been irrevocably delegated to an unaffiliated third-party investment adviser. The reporting person also disclaims beneficial ownership of the securities except to the extent of its pecuniary interest.

Was the Standard Nuclear (STDN) Form 4 transaction under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as a plan transaction. The conversion resulted from the automatic 1-for-1 conversion of preferred into common stock immediately prior to the closing of Standard Nuclear’s initial public offering.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
ST-1014 Fund I, a series of Fundomo Syndicates, LP

(Last)(First)(Middle)
PO BOX 3217

(Street)
SEATTLE WASHINGTON 98114

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Standard Nuclear, Inc. [ STDN ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/17/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock07/17/2026C14,000,000A(1)14,000,000D(2)(3)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Series Seed-1 Preferred Stock(1)07/17/2026C14,000,000 (1) (1)Class A Common Stock14,000,000$00D(2)(3)
Explanation of Responses:
1. The 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.
2. ST-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.
3. The 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.
ST-1014 Fund I, a series of Fundomo Syndicates, LP. By: Fund GP, LLC, its General Partner. By: Belltower Fund Group, Ltd., Agent. By: /s/ Paul Larkin, Authorized Person07/23/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)