STOCK TITAN

Standard Nuclear (STDN) logs IPO-related preferred-to-common conversions

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Standard Nuclear, Inc. reported IPO-related equity conversions by affiliate funds. On 2026-07-17, Fundomo-related vehicles converted 3849782 shares of Series A Preferred Stock, 2027576 shares of Series A-2 Preferred Stock and 14000000 shares of Series Seed-1 Preferred Stock into equal numbers of Class A Common Stock on a 1-for-1 basis immediately before the initial public offering. Voting and dispositive power is shared or delegated among Fundomo SN-001, Fundomo SN-002, related general partners and Corey L. Nobile, who all disclaim beneficial ownership except for their pecuniary interests.

Positive

  • None.

Negative

  • None.
Insider Fundomo SN-001, LP, Fundomo SN-002, LP, Fundomo SN-001 GP, LLC, Fundomo SN-002 GP, LLC, Nobile Corey L.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner
Type Security Shares Price Value
Conversion Series A Preferred Stock F1, F2, F3, F4 3,849,782 $0.00 $0.00
Conversion Series A-2 Preferred Stock F1, F2, F3, F4 2,027,576 $0.00 $0.00
Conversion Series Seed-1 Preferred Stock F1, F2, F3, F4 14,000,000 $0.00 $0.00
Conversion Class A Common Stock F1, F2, F3, F4 3,849,782 -- --
Conversion Class A Common Stock F1, F2, F3, F4 2,027,576 -- --
Conversion Class A Common Stock F1, F2, F3, F4 14,000,000 -- --
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); Class A Common Stock — 3,849,782 shares (Direct); Class A Common Stock — 2,027,576 shares (Indirect, By Fundomo SN-002, LP); Class A Common Stock — 14,000,000 shares (Indirect, By ST-1014 Fund I, a series of Fundomo Syndicates, LP)
Footnotes (4)
  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 L. Nobile is the sole member of SN-001 GP and SN-002 GP. Each of SN-001 GP, SN-002 GP, and Corey L. 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. As the fund lead under such limited partnership agreement, Corey L. Nobile may also be considered to have shared voting and dispositive powers over such shares. None of SN-001, SN-002, SN-001 GP, or SN-002 GP 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.
Series A Preferred converted 3849782.0000 shares Series A Preferred Stock automatically converted 1-for-1 into Class A Common Stock on 2026-07-17
Series A-2 Preferred converted 2027576.0000 shares Series A-2 Preferred Stock automatically converted 1-for-1 into Class A Common Stock on 2026-07-17
Series Seed-1 Preferred converted 14000000.0000 shares Series Seed-1 Preferred Stock automatically converted 1-for-1 into Class A Common Stock on 2026-07-17
Total derivative shares converted 19877358 Total underlying shares of preferred stock converted into Class A Common Stock per transaction summary
Direct Class A Common holdings 3849782.0000 shares Class A Common Stock held directly following conversion of Series A Preferred Stock
Indirect Class A via Fundomo SN-002, LP 2027576.0000 shares Class A Common Stock held indirectly through Fundomo SN-002, LP after Series A-2 conversion
Indirect Class A via ST-1014 Fund I 14000000.0000 shares Class A Common Stock held indirectly through ST-1014 Fund I after Series Seed-1 conversion
automatically converted financial
"Series Seed-1, Series A and Series A-2 Preferred Stock automatically converted into Class A Common Stock"
1-for-1 basis financial
"automatically converted into Class A Common Stock of the Issuer on a 1-for-1 basis"
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
"may be deemed to share voting and dispositive power with respect to the shares held directly"
pecuniary interest financial
"disclaims beneficial ownership of the reported securities (except to the extent of such person's or entity's pecuniary interest"
beneficial ownership financial
"shall not be deemed an admission that such persons are ... the beneficial owner of any equity 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.

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FAQ

What did Standard Nuclear (STDN) insiders report in this Form 4 filing?

The filing reports that Fundomo-affiliated vehicles converted multiple preferred stock series into Class A Common Stock on 2026-07-17, automatically on a 1-for-1 basis immediately before Standard Nuclear’s initial public offering, with no sale of shares reported in this document.

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

The filing shows conversions of 3849782 Series A, 2027576 Series A-2 and 14000000 Series Seed-1 Preferred Stock into the same numbers of Class A Common shares, reflecting automatic 1-for-1 conversions tied to the closing of Standard Nuclear’s initial public offering.

How is voting and dispositive power over Standard Nuclear (STDN) shares structured for ST-1014 Fund I?

For ST-1014 Fund I, voting and dispositive power over its shares is irrevocably delegated to an unaffiliated third-party investment adviser. As fund lead, Corey L. Nobile may also be considered to have shared powers, while other Fundomo entities have no such power.

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

No. The reporting persons and entities disclaim beneficial ownership of the securities reported, except to the extent of their pecuniary interest. The statement specifies that the filing should not be deemed an admission of beneficial ownership under Section 16 or otherwise.

Were the Standard Nuclear (STDN) conversions made under a Rule 10b5-1 trading plan?

The Rule 10b5-1 checkbox is not marked as affirmative, and there is no footnote indicating a trading plan. The transactions are described as automatic conversions of preferred stock into common stock immediately before the company’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*
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)

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 Stock07/17/2026C3,849,782A(1)3,849,782D(2)(3)(4)
Class A Common Stock07/17/2026C2,027,576A(1)2,027,576IBy Fundomo SN-002, LP(2)(3)(4)
Class A Common Stock07/17/2026C14,000,000A(1)14,000,000IBy ST-1014 Fund I, a series of Fundomo Syndicates, LP(2)(3)(4)
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 (1) (1)Class A Common Stock3,849,782$00D(2)(3)(4)
Series A-2 Preferred Stock(1)07/17/2026C2,027,576 (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 (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)
1. Name and Address of Reporting Person*
Fundomo SN-001 GP, LLC

(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)
1. Name and Address of Reporting Person*
Fundomo SN-002 GP, LLC

(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)
1. Name and Address of Reporting Person*
Nobile Corey L.

(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 L. Nobile is the sole member of SN-001 GP and SN-002 GP. Each of SN-001 GP, SN-002 GP, and Corey L. 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. As the fund lead under such limited partnership agreement, Corey L. Nobile may also be considered to have shared voting and dispositive powers over such shares. None of SN-001, SN-002, SN-001 GP, or SN-002 GP 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.
Remarks:
This Form 4 is being filed to include SN-001 GP, SN-002 GP, and Corey L. Nobile as Reporting Persons following the receipt of such Reporting Persons CIK codes, subsequent to the filing of the Form 4 made on July 21, 2026, as amended by that Form 4/A filed on July 22, 2026.
Fundomo SN-001, LP. By: Fundomo SN-001 GP, LLC, its general partner, By: /s/ Corey L. Nobile, Sole Member07/30/2026
Fundomo SN-002, LP. By: Fundomo SN-002 GP, LLC, its general partner, By: /s/ Corey L. Nobile, Sole Member07/30/2026
Fundomo SN-001 GP, LLC. By: /s/ Corey L. Nobile, Sole Member07/30/2026
Fundomo SN-002 GP, LLC. By: /s/ Corey L. Nobile, Sole Member07/30/2026
/s/ Corey L. Nobile07/30/2026
** 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)