Keeley Rose Marrocco - 15 Jul 2026 Form 4 Insider Report for Standard Nuclear, Inc. (STDN)

Reporting relationship: Chief Operating Officer
Issuer ticker: STDN
Reported as of: 15 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 17 Jul 2026, 21:14:51 UTC
Source filing: View source filing
Reporting owner signature: /s/ Shahram Ghasemian, by power of attorney

Key filing fact

Keeley Rose Marrocco filed Form 4 for Standard Nuclear, Inc. (STDN) on 17 Jul 2026.

Key facts

This page summarizes Keeley Rose Marrocco's Form 4 filing for Standard Nuclear, Inc. (STDN).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Jul 2026, 21:14.

Change

No earlier filing in this sequence is available for direct comparison.
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 (1)

CIK 0002143728 Primary reporting owner

Marrocco Keeley Rose

Relationship: Chief Operating Officer
Address: C/O STANDARD NUCLEAR, INC., 200 EUROPIA AVE, OAK RIDGE
Signature: /s/ Shahram Ghasemian, by power of attorney
Signature date: 17 Jul 2026

Reported non-derivative transactions

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

STDN transaction

Class A common stock

Award

Transaction value
Shares: +200,000
Change %: +6.7%
Price: $0.000000^*
Shares after: 3,200,000
Date: 15 Jul 2026
Ownership: Direct
Footnotes: F1

STDN transaction

Class A common stock

Award

Transaction value
Shares: +364,625
Change %: +11%
Price: $0.000000^*
Shares after: 3,564,625
Date: 17 Jul 2026
Ownership: Direct
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares of Class A Common Stock underlying an award of restricted stock units ("RSUs"). The RSUs will vest over four years, with 25% vesting on June 1, 2027 and the remainder vesting in equal monthly installments thereafter, subject to the Reporting Person's continued service through each vesting date.

Footnote F2

Represents shares of Class A Common Stock underlying an award of RSUs. The RSUs will vest over three years in quarterly installments of 1/12th, subject to the Reporting Person's continued service through each vesting date.