STOCK TITAN

Standard Nuclear, Inc. (STDN) director reports multiple stock option grants

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Standard Nuclear, Inc. reports that director Matina Alexander C holds non statutory stock options over 200,000 and 334,000 shares of Class A Common Stock. The options have exercise prices of $0.21 and $1.635 per share and expire on June 10, 2035 and April 19, 2036, respectively. Footnotes describe time-based vesting schedules tied to continued service.

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Insider Matina Alexander C
Role Director
Type Security Shares Price Value
holding Non statutory stock options -- -- --
holding Non statutory stock options -- -- --
Holdings After Transaction: Non statutory stock options — 200,000 shares (Direct)
Footnotes (1)
  1. Represents stock options to purchase 200,000 shares of Class A Common Stock granted on June 11, 2025 with an exercise price of $0.21 per share, which vests as follows: 25% vested on January 13, 2026, with an additional 1/48th vesting monthly thereafter, subject to the Reporting Person's continued service. Represents stock options to purchase 334,000 shares of Class A Common Stock granted on April 20, 2026 with an exercise price of $1.635 per share, which vests as follows: 25% vests on December 1, 2026, with an additional 1/36th vesting monthly thereafter, subject to the Reporting Person's continued service.
Option underlying shares 200,000 shares Non statutory stock options over 200,000 shares of Class A Common Stock, granted June 11, 2025
Option underlying shares 334,000 shares Non statutory stock options over 334,000 shares of Class A Common Stock, granted April 20, 2026
Exercise price $0.21 per share Exercise price for 200,000-share non statutory stock option grant
Exercise price $1.635 per share Exercise price for 334,000-share non statutory stock option grant
Option expiration 2035-06-10 Expiration date for the 200,000-share option grant
Option expiration 2036-04-19 Expiration date for the 334,000-share option grant
Initial vesting 25% 25% vested January 13, 2026 for 200,000-share grant; 25% vests December 1, 2026 for 334,000-share grant
Non statutory stock options financial
"security_title: Non statutory stock options"
Class A Common Stock financial
"stock options to purchase 200,000 shares of Class A Common Stock granted"
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.
exercise price financial
"with an exercise price of $0.21 per share, which vests as follows"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting monthly financial
"with an additional 1/48th vesting monthly thereafter, subject to the Reporting Person's"

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

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FAQ

What insider holdings does Standard Nuclear, Inc. (STDN) disclose for Matina Alexander C?

Standard Nuclear, Inc. discloses that director Matina Alexander C holds non statutory stock options over 200,000 and 334,000 shares of Class A Common Stock, with specified exercise prices, expiration dates, and service-based vesting schedules.

What are the exercise prices of the reported stock options for STDN?

The reported non statutory stock options have exercise prices of $0.21 and $1.635 per share, each tied to Class A Common Stock. These options were granted on June 11, 2025 and April 20, 2026, according to the accompanying footnotes.

How many Standard Nuclear (STDN) shares underlie each option grant?

One option grant covers 200,000 underlying shares of Class A Common Stock, and a second grant covers 334,000 underlying shares. Both are reported as non statutory stock options held directly by the director.

When do the reported STDN stock options held by the director expire?

The non statutory stock options expire on June 10, 2035 for the 200,000-share grant and April 19, 2036 for the 334,000-share grant. These expiration dates define the final dates on which the options can be exercised.

What are the vesting terms of the Standard Nuclear (STDN) option grants?

For the 200,000-share grant, 25% vested on January 13, 2026, with 1/48th vesting monthly thereafter. For the 334,000-share grant, 25% vests on December 1, 2026, with 1/36th vesting monthly thereafter, all subject to continued service.

Is this STDN Form 3 reporting any stock purchases or sales?

The Form 3 reports holdings of non statutory stock options, not open-market stock purchases or sales. The transactions are coded as holdings with unknown transaction codes and are described through option grant and vesting details.
SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Matina Alexander C

(Last)(First)(Middle)
C/O STANDARD NUCLEAR, INC.
200 EUROPIA AVE

(Street)
OAK RIDGE TENNESSEE 37830

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
07/15/2026
3. Issuer Name and Ticker or Trading Symbol
Standard Nuclear, Inc. [ STDN ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Non statutory stock options (1)06/10/2035Class A common stock200,000$0.21D
Non statutory stock options (2)04/19/2036Class A common stock334,000$1.635D
Explanation of Responses:
1. Represents stock options to purchase 200,000 shares of Class A Common Stock granted on June 11, 2025 with an exercise price of $0.21 per share, which vests as follows: 25% vested on January 13, 2026, with an additional 1/48th vesting monthly thereafter, subject to the Reporting Person's continued service.
2. Represents stock options to purchase 334,000 shares of Class A Common Stock granted on April 20, 2026 with an exercise price of $1.635 per share, which vests as follows: 25% vests on December 1, 2026, with an additional 1/36th vesting monthly thereafter, subject to the Reporting Person's continued service.
Remarks:
/s/ Alexander Matina07/15/2026
** 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 5 (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 3: SEC 1473 (03-26)