Fundomo SN-001, LP - 17 Jul 2026 Form 4 Insider Report for Standard Nuclear, Inc. (STDN)

Reporting relationship: 10%+ Owner
Issuer ticker: STDN
Reported as of: 17 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 30 Jul 2026, 21:28:21 UTC
Prior SEC filing: 16 Jul 2026
Source filing: View source filing
Reporting owner signature: Fundomo SN-001, LP. By: Fundomo SN-001 GP, LLC, its general partner, By: /s/ Corey L. Nobile, Sole Member

Key filing fact

Fundomo SN-001, LP filed Form 4 for Standard Nuclear, Inc. (STDN) on 30 Jul 2026.

Key facts

This page summarizes Fundomo SN-001, LP's Form 4 filing for Standard Nuclear, Inc. (STDN).
6 reported transactions and 15 derivative rows are listed below.
Accepted by SEC: 30 Jul 2026, 21:28.

Change

Previous filing in this sequence was filed on 16 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (5)

CIK 0002084264 Primary reporting owner

Fundomo SN-001, LP

Relationship: 10%+ Owner
Address: 401 PARK AVE. S., 10TH FLOOR, NEW YORK
Signature: Fundomo SN-001, LP. By: Fundomo SN-001 GP, LLC, its general partner, By: /s/ Corey L. Nobile, Sole Member
Signature date: 30 Jul 2026

CIK 0002124229

Fundomo SN-002, LP

Relationship: 10%+ Owner
Address: 401 PARK AVE. S., 10TH FLOOR, NEW YORK
Signature: Fundomo SN-002, LP. By: Fundomo SN-002 GP, LLC, its general partner, By: /s/ Corey L. Nobile, Sole Member
Signature date: 30 Jul 2026

CIK 0002146930

Fundomo SN-001 GP, LLC

Relationship: 10%+ Owner
Address: 401 PARK AVE. S., 10TH FLOOR, NEW YORK
Signature: Fundomo SN-001 GP, LLC. By: /s/ Corey L. Nobile, Sole Member
Signature date: 30 Jul 2026

CIK 0002146934

Fundomo SN-002 GP, LLC

Relationship: 10%+ Owner
Address: 401 PARK AVE. S., 10TH FLOOR, NEW YORK
Signature: Fundomo SN-002 GP, LLC. By: /s/ Corey L. Nobile, Sole Member
Signature date: 30 Jul 2026

CIK 0002146927

Nobile Corey L.

Relationship: 10%+ Owner
Address: 401 PARK AVE. S., 10TH FLOOR, NEW YORK
Signature: /s/ Corey L. Nobile
Signature date: 30 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +3,849,782
Change %
Price
Shares after: 3,849,782
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +3,849,782
Change %
Price
Shares after: 3,849,782
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +3,849,782
Change %
Price
Shares after: 3,849,782
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +3,849,782
Change %
Price
Shares after: 3,849,782
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +3,849,782
Change %
Price
Shares after: 3,849,782
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +2,027,576
Change %
Price
Shares after: 2,027,576
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +2,027,576
Change %
Price
Shares after: 2,027,576
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +2,027,576
Change %
Price
Shares after: 2,027,576
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +2,027,576
Change %
Price
Shares after: 2,027,576
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +2,027,576
Change %
Price
Shares after: 2,027,576
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +14,000,000
Change %
Price
Shares after: 14,000,000
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +14,000,000
Change %
Price
Shares after: 14,000,000
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +14,000,000
Change %
Price
Shares after: 14,000,000
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +14,000,000
Change %
Price
Shares after: 14,000,000
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Footnotes: F1, F2, F3, F4

STDN transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +14,000,000
Change %
Price
Shares after: 14,000,000
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Footnotes: F1, F2, F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

STDN transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares: -3,849,782
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,849,782
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares: -3,849,782
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,849,782
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares: -3,849,782
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,849,782
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares: -3,849,782
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,849,782
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares: -3,849,782
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,849,782
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A-2 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,027,576
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Underlying class: Class A Common Stock
Underlying amount: 2,027,576
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A-2 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,027,576
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Underlying class: Class A Common Stock
Underlying amount: 2,027,576
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A-2 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,027,576
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Underlying class: Class A Common Stock
Underlying amount: 2,027,576
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A-2 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,027,576
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Underlying class: Class A Common Stock
Underlying amount: 2,027,576
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series A-2 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,027,576
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By Fundomo SN-002, LP
Underlying class: Class A Common Stock
Underlying amount: 2,027,576
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series Seed-1 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -14,000,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Underlying class: Class A Common Stock
Underlying amount: 14,000,000
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series Seed-1 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -14,000,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Underlying class: Class A Common Stock
Underlying amount: 14,000,000
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series Seed-1 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -14,000,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Underlying class: Class A Common Stock
Underlying amount: 14,000,000
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series Seed-1 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -14,000,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Underlying class: Class A Common Stock
Underlying amount: 14,000,000
Exercise price
Footnotes: F1, F2, F3, F4

STDN transaction Derivative

Series Seed-1 Preferred Stock

Conversion of derivative security

Transaction value
Shares: -14,000,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Jul 2026
Ownership: By ST-1014 Fund I, a series of Fundomo Syndicates, LP
Underlying class: Class A Common Stock
Underlying amount: 14,000,000
Exercise price
Footnotes: F1, F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

SEC 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.

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