Every Form 4 that Standard Nuclear, Inc. (STDN) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow STDN and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full STDN filings page.
Standard Nuclear, Inc. Chief Legal Officer Shahram Ghasemian had 5,016 shares of Class A common stock surrendered to the company to satisfy tax withholding when restricted stock units vested on October 15, 2026. After the transaction, he directly held 594,984 shares of Class A common stock.
Standard Nuclear, Inc. CEO and Director Kurt Amir Terrani surrendered 110,014 shares of Class A common stock to the company to satisfy tax withholding upon vesting of restricted stock units on October 17, 2026. The reported price was $12.17 per share, the closing price of the Class A common stock on the vesting date. Terrani directly held 5,876,862 shares after the transaction.
Standard Nuclear, Inc. (STDN) Chief Operating Officer Keeley Rose Marrocco reported that 7,399 shares of Class A common stock were surrendered directly to the company to satisfy tax withholding upon vesting of restricted stock units on October 17, 2026. She reported direct holdings of 3,557,226 shares after the transaction.
Standard Nuclear, Inc. Chief Financial Officer Kevin J. Harrill reported that 32,715 Class A common shares were surrendered to the company to satisfy tax withholding upon vesting of restricted stock units on October 17, 2026. The reported price was $12.17 per share, the closing price on the vesting date. Harrill directly held 1,555,444 shares following the transaction.
Standard Nuclear, Inc. (STDN) Executive Chairman Thomas Edward Hendrix disposed of 95,590 Class A common shares by surrendering them to the company for tax withholding upon vesting of restricted stock units on October 17, 2026. The reported $12.17 per-share figure was the closing price on the vesting date. Hendrix reported direct holdings of 2,639,097 shares after the transaction.
Standard Nuclear, Inc. (STDN) director Seth Michael Cohen reported an acquisition of 13,255 shares of Class A common stock underlying a restricted stock unit (RSU) award granted at $0.00 per share. According to the disclosure, 100% of these RSUs will vest on the earlier of the day before Standard Nuclear’s 2027 annual meeting of stockholders or the one-year anniversary of the grant date, subject to his continued board service. This amended Form 4 also corrects Cohen’s beneficial ownership to 15,255 shares, noting that an earlier filing had inadvertently omitted 2,000 already beneficially owned shares.
Cohen Seth Michael reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. reported that director Cohen Seth Michael received an equity compensation award of 13,255 shares of Class A common stock in the form of restricted stock units. The RSUs carry a $0.0000 grant price and will vest 100% on the earlier of the day before the 2027 annual stockholders meeting or the one-year anniversary of the grant date, subject to his continued Board service. Following this grant, Cohen holds 13,255 shares directly.
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.
ST-1014 Fund I, a series of Fundomo Syndicates, LP, a more-than-10% owner of Standard Nuclear, Inc., converted 14,000,000 shares of Series Seed-1 Preferred Stock into 14,000,000 shares of Class A Common Stock on a 1-for-1 basis immediately prior to the closing of Standard Nuclear’s initial public offering. After the conversion, the fund held 14,000,000 Class A Common shares and no Series Seed-1 Preferred shares. Voting and dispositive power over these shares has been irrevocably delegated to an unaffiliated third-party investment adviser, and the reporting person disclaims beneficial ownership except to the extent of its pecuniary interest.
Welara Capital Partners LLC Series 3, a more than 10% holder of Standard Nuclear, Inc., reported the automatic conversion of its preferred stock into common shares in connection with the company’s initial public offering of Class A Common Stock. On 2026-07-17 it converted 15,000,000 Series Seed-1, 3,515,018 Series A, and 1,728,076 Series A-2 Preferred Stock into an equal number of Class A Common Stock at a 1-for-1 ratio. Following these conversions, it holds 20,243,094 Class A Common shares directly and no longer holds those preferred series.
Standard Nuclear, Inc. CEO Kurt Amir Terrani reported a series of bona fide gifts of Class A common stock on 2026-07-20, transferring shares from his direct holdings to five irrevocable family trusts. The trusts now hold 629,374, 175,000, 60,000, 245,000 and 175,000 shares, all at $0.0000 per share. The gifts qualify as a permitted exception under the IPO lock-up, and Terrani is deemed to have an indirect beneficial interest but disclaims beneficial ownership of shares held by each trust.
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.
Fundomo SN-001, LP and Fundomo SN-002, LP reported automatic 1-for-1 conversion of their Series Seed-1, Series A and Series A-2 Preferred Stock into Class A Common Stock of Standard Nuclear, Inc. immediately before the IPO. The conversions covered 19,877,358 Class A shares across affiliated entities, with voting and dispositive power over ST-1014 Fund I’s shares delegated to an unaffiliated adviser and beneficial ownership disclaimed except for pecuniary interests.
Marrocco Keeley Rose reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. reported that Chief Operating Officer Marrocco Keeley Rose received two equity compensation awards in the form of restricted stock units (RSUs) tied to Class A common stock. On July 15, 2026, Rose was granted RSUs covering 200,000 shares, vesting over four years, with 25% vesting on June 1, 2027 and the remainder in equal monthly installments, subject to continued service. On July 17, 2026, Rose received additional RSUs covering 364,625 shares, vesting over three years in quarterly 1/12th installments, also subject to continued service, resulting in 3,564,625 shares of Class A common stock held directly after this award.
Standard Nuclear, Inc. director Donald A. Moul reported a grant classified as a grant, award, or other acquisition10,964 shares
Miller Austin Scott reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. granted director Miller Austin Scott an equity award covering 11,436 shares of Class A common stock through restricted stock units. These RSUs vest 100% on the earlier of the day before the 2027 Annual Meeting of Stockholders or the one-year anniversary of the grant date, contingent on his continued board service.
Matina Alexander C reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. director Matina Alexander reported an award of 16,667 shares of Class A common stock underlying restricted stock units on 2026-07-17, at a reported price of 0.0000 per share. The RSUs vest in quarterly 1/12th installments over three years, contingent on continued service, with 16,667 shares reported as directly held after the award.
Terrani Kurt Amir reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. reported that CEO, President and Director Kurt Amir Terrani received two equity awards of Class A common stock. On July 15, 2026 he was granted 200,000 RSU-based shares vesting over four years, and on July 17, 2026 he was granted 3,646,250 RSU-based shares vesting quarterly over three years. Following these awards, he directly holds 7,271,250 Class A common shares.
Standard Nuclear, Inc. Executive Chairman Hendrix Thomas Edward reported IPO-related equity conversions and awards. Preferred shares held by Standard Nuclear Trust converted into 20,308 and 50,000 Class A shares, contributing to a total of 5,824,308 Class A shares that were then exchanged one-for-one into 5,824,308 Class B shares under an Exchange Agreement. Separately, he acquired an award covering 2,734,687 Class A shares in the form of RSUs vesting over three years in quarterly 1/12th installments, with each settlement share exchangeable into Class B stock and trust-held securities subject to his voting and dispositive control.
GHASEMIAN SHAHRAM reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. reported that Chief Legal and Compliance Officer and Corporate Secretary Shahram Ghasemian received four compensation-related awards of restricted stock units covering Class A common stock on July 15, 2026. The awards cover 40,000, 100,000, 100,000 and 360,000 shares, vesting immediately upon IPO pricing, over 18 months, and over four-year schedules beginning May 4, 2027 and June 1, 2027, in each case subject to continued service.
HARRILL KEVIN J reported acquisition or exercise transactions in this Form 4 filing.
Standard Nuclear, Inc. reported equity compensation awards to Chief Financial Officer Kevin J. Harrill. He received 100,000 shares of Class A common stock underlying restricted stock units on July 15, 2026 and 546,937 RSU-based shares on July 17, 2026, bringing his direct holdings to 1,588,159 shares. The 100,000-share grant vests over four years, with 25% vesting on June 1, 2027 and the balance in equal monthly installments, while the 546,937-share grant vests over 18 months in quarterly installments of one-sixth, all contingent on continued service.
Decisive Point Group, LLC, a 10% owner of Standard Nuclear, Inc., reported multiple equity transactions around the company’s initial public offering. Affiliated funds converted an aggregate of 16,661,314 preferred shares into Class A Common Stock at a 1-for-1 ratio under the Fifth Amended and Restated Certificate of Incorporation.
In addition, Decisive Point – Standard Nuclear V, LLC purchased 1,275,496 Class A shares at $15 per share through a reserved share program at the IPO price. Decisive Point exercises voting and dispositive control over the affiliated vehicles holding these shares, and the transactions are not reported under a Rule 10b5-1 trading plan.