STOCK TITAN

Standard Nuclear (STDN) investors convert preferred shares before IPO

(Neutral)
(Neutral)
Form Type
4/A

Rhea-AI Filing Summary

Standard Nuclear, Inc. reporting 10% owners Fundomo SN-001, LP and Fundomo SN-002, LP reported automatic conversions of preferred stock into Class A Common Stock on July 17, 2026, immediately before the company’s initial public offering. Converted holdings included 3,849,782 Series A, 2,027,576 Series A-2, and 14,000,000 Series Seed-1 Preferred shares, all on a 1-for-1 basis, eliminating these derivative positions.

The amended insider report clarifies that these preferred shares were disposed of upon conversion rather than acquired, correcting a clerical error in how the prior report classified the derivative disposition. Affiliates and managers, including ST-1014 Fund I and Corey Nobile, may share voting or dispositive power over some positions, but beneficial ownership is disclaimed except for any pecuniary interest, and voting and dispositive power over ST-1014 Fund I is delegated to an unaffiliated investment adviser.

Positive

  • None.

Negative

  • None.
Insider Fundomo SN-001, LP, Fundomo SN-002, LP
Role 10% Owner | 10% Owner
Type Security Shares Price Value
Conversion Series A Preferred Stock F1, F5, F2, F3, F4 3,849,782 $0.00 $0.00
Conversion Series A-2 Preferred Stock F1, F5, F2, F3, F4 2,027,576 $0.00 $0.00
Conversion Series Seed-1 Preferred Stock F1, F5, F2, F3, F4 14,000,000 $0.00 $0.00
Holdings After Transaction: Series A Preferred Stock — 0 shares (Direct); Series A-2 Preferred Stock — 0 shares (Indirect, By Fundomo SN-002, LP); Series Seed-1 Preferred Stock — 0 shares (Indirect, By ST-1014 Fund I, a series of Fundomo Syndicates, LP)
Footnotes (5)
  1. F1. The Series Seed-1 Preferred Stock, Series A Preferred Stock, and Series A-2 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. Fundomo SN-001 GP, LLC ("SN-001 GP") is the sole general partner of Fundomo SN-001, LP ("SN-001"). Fundomo SN-002 GP, LLC ("SN-002 GP") is the sole general partner of Fundomo SN-002, LP ("SN-002"). Corey Nobile is the sole member of SN-001 GP and SN-002 GP. Each of SN-001 GP, SN-002 GP, and Corey Nobile may be deemed to share voting and dispositive power with respect to the shares held directly by SN-001 (in the case of SN-001 GP) and SN-002 (in the case of SN-002 GP), respectively.
  3. F3. ST-1014 Fund I, a series of Fundomo Syndicates, LP ("ST-1014 Fund I") may be considered an affiliate of SN-001, SN-002, SN-001 GP and 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 the reporting persons named herein has voting or dispositive power over such shares.
  4. F4. Each of the reporting persons and entities disclaims beneficial ownership of the reported securities (except to the extent of such person's or entity's pecuniary interest in such securities). The filing of this statement by the reporting persons shall not be deemed an admission that such persons are, 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.
  5. F5. The Form 4 filed on July 21, 2026 is amended herein to correct a clerical error in Box 5 of Table II. Consistent with the disposition of the underlying preferred stock upon its conversion into Class A Common Stock as described in the accompanying footnotes, the number of derivative securities disposed of should have been entered under the "(D)" column in Box 5, but was inadvertently reported under the "(A)" column. The Form 4 remains otherwise unmodified.
Series A Preferred converted 3,849,782 shares Converted into Class A Common Stock on July 17, 2026 at a 1-for-1 ratio
Series A-2 Preferred converted 2,027,576 shares Converted into Class A Common Stock on July 17, 2026 at a 1-for-1 ratio
Series Seed-1 Preferred converted 14,000,000 shares Converted into Class A Common Stock on July 17, 2026 at a 1-for-1 ratio
Total preferred shares converted 19,877,358 shares Aggregate preferred shares converted into Class A Common as shown in the transaction summary
Conversion ratio 1-for-1 Automatic conversion of preferred stock into Class A Common Stock immediately prior to IPO closing
initial public offering financial
"converted on a 1-for-1 basis 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.
Class A Common Stock financial
"automatically 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.
voting and dispositive power financial
"may be deemed to share voting and dispositive power with respect to the shares held directly"
beneficial ownership financial
"disclaims beneficial ownership of the reported securities except to the extent of pecuniary interest"
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.
pecuniary interest financial
"disclaims beneficial ownership of the reported securities except to the extent of such person's pecuniary interest"

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FAQ

What insider transactions did Standard Nuclear (STDN) report on July 17, 2026?

Standard Nuclear’s 10% owners reported automatic conversions of preferred stock into Class A Common Stock. On July 17, 2026, 3,849,782 Series A, 2,027,576 Series A-2, and 14,000,000 Series Seed-1 Preferred shares converted 1-for-1 immediately before the initial public offering.

How many Standard Nuclear (STDN) preferred shares were converted to common stock?

In total, 19,877,358 preferred shares converted into the same number of Class A Common shares. This includes 3,849,782 Series A, 2,027,576 Series A-2, and 14,000,000 Series Seed-1 Preferred shares, all on a 1-for-1 basis immediately prior to the IPO closing.

Why was the Standard Nuclear (STDN) insider report amended?

The insider report was amended to correct a clerical error in how the derivative disposition was classified. The number of preferred shares converted should have been reported under the “(D)” (disposed) column, but was inadvertently placed under the “(A)” (acquired) column; economics remain unchanged.

Who are Fundomo SN-001, LP and Fundomo SN-002, LP in relation to Standard Nuclear (STDN)?

Fundomo SN-001, LP and Fundomo SN-002, LP are reported as 10% owners of Standard Nuclear. Their general partners are SN-001 GP and SN-002 GP, respectively, and Corey Nobile is the sole member of both GPs, which may share voting and dispositive power over those funds’ holdings.

What is ST-1014 Fund I’s role in Standard Nuclear (STDN) share ownership?

ST-1014 Fund I holds 14,000,000 Series Seed-1 Preferred shares that converted into Class A Common Stock. It is affiliated with the Fundomo entities, but voting and dispositive power over these shares is irrevocably delegated to an unaffiliated third-party investment adviser under its limited partnership agreement.

Do the Standard Nuclear (STDN) reporting persons claim full beneficial ownership of the converted shares?

No. The reporting persons and related entities disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest. They state that the filing should not be deemed an admission of beneficial ownership for Section 16 or other purposes.
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*
Fundomo SN-001, LP

(Last)(First)(Middle)
401 PARK AVE. S.
10TH FLOOR

(Street)
NEW YORK NEW YORK 10010

(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)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)
07/21/2026
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
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 A Preferred Stock(1)07/17/2026C3,849,782(5) (1) (1)Class A Common Stock3,849,782$00D(2)(3)(4)
Series A-2 Preferred Stock(1)07/17/2026C2,027,576(5) (1) (1)Class A Common Stock2,027,576$00IBy Fundomo SN-002, LP(2)(3)(4)
Series Seed-1 Preferred Stock(1)07/17/2026C14,000,000(5) (1) (1)Class A Common Stock14,000,000$00IBy ST-1014 Fund I, a series of Fundomo Syndicates, LP(2)(3)(4)
1. Name and Address of Reporting Person*
Fundomo SN-001, LP

(Last)(First)(Middle)
401 PARK AVE. S.
10TH FLOOR

(Street)
NEW YORK NEW YORK 10010

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Fundomo SN-002, LP

(Last)(First)(Middle)
401 PARK AVE. S.
10TH FLOOR

(Street)
NEW YORK NEW YORK 10016

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. The Series Seed-1 Preferred Stock, Series A Preferred Stock, and Series A-2 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. Fundomo SN-001 GP, LLC ("SN-001 GP") is the sole general partner of Fundomo SN-001, LP ("SN-001"). Fundomo SN-002 GP, LLC ("SN-002 GP") is the sole general partner of Fundomo SN-002, LP ("SN-002"). Corey Nobile is the sole member of SN-001 GP and SN-002 GP. Each of SN-001 GP, SN-002 GP, and Corey Nobile may be deemed to share voting and dispositive power with respect to the shares held directly by SN-001 (in the case of SN-001 GP) and SN-002 (in the case of SN-002 GP), respectively.
3. ST-1014 Fund I, a series of Fundomo Syndicates, LP ("ST-1014 Fund I") may be considered an affiliate of SN-001, SN-002, SN-001 GP and 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 the reporting persons named herein has voting or dispositive power over such shares.
4. Each of the reporting persons and entities disclaims beneficial ownership of the reported securities (except to the extent of such person's or entity's pecuniary interest in such securities). The filing of this statement by the reporting persons shall not be deemed an admission that such persons are, 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.
5. The Form 4 filed on July 21, 2026 is amended herein to correct a clerical error in Box 5 of Table II. Consistent with the disposition of the underlying preferred stock upon its conversion into Class A Common Stock as described in the accompanying footnotes, the number of derivative securities disposed of should have been entered under the "(D)" column in Box 5, but was inadvertently reported under the "(A)" column. The Form 4 remains otherwise unmodified.
Fundomo SN-001, LP. By: Fundomo SN-001 GP, LLC, its general partner, By: /s/ Corey Nobile, Sole Member07/22/2026
Fundomo SN-002, LP. By: Fundomo SN-002 GP, LLC, its general partner, By: /s/ Corey Nobile, Sole Member07/22/2026
** 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)