Every Form 4 that Castellum, Inc. (CTM) 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 CTM 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 CTM filings page.
Castellum, Inc. (CTM) reported that its Chief Operating Officer, Andrew Merriman, purchased a total of 50,000 shares of common stock in open-market or private transactions on September 9, 2026. The shares were bought at per-share prices of $0.6193 and $0.62, and are held as direct ownership. No Rule 10b5-1 trading plan is reported for these transactions.
Castellum, Inc. Chief Operating Officer Andrew Merriman reported an open-market purchase of 1,202 shares of common stock. The transaction occurred on July 1, 2026 at a per share price of $0.612. After this purchase, he directly owns 538,531 shares of Castellum common stock.
The shares were acquired through the Castellum, Inc. 2025 Employee Stock Purchase Plan, with the purchase price set at a 15% discount to the closing price of Castellum’s stock on the NYSE American LLC on June 30, 2026.
Castellum, Inc. Chief Financial Officer and Treasurer David T. Bell reported an open-market purchase of common stock. He acquired 1,202 shares on July 1, 2026 at a price of $0.612 per share, increasing his direct holdings to 17,255 shares.
According to the company’s 2025 Employee Stock Purchase Plan, the shares were bought at a 15% discount to the closing price of Castellum’s common stock on the NYSE American on June 30, 2026, making this a plan-based accumulation of additional equity.
Castellum, Inc. General Counsel and Secretary Tammy L. Martin made an open-market purchase of company stock under the 2025 Employee Stock Purchase Plan. She bought 1,202 shares of common stock at a price of $0.612 per share, bringing her direct holdings to 15,031 shares. The plan purchase price reflected a 15% discount to the closing price of Castellum’s common stock on June 30, 2026.
Castellum, Inc. President and CEO Glen R. Ives increased his stake through a small share purchase and a large option grant. He bought 1,262 shares of common stock at $0.612 per share under the 2025 Employee Stock Purchase Plan, at a 15% discount to the June 30, 2026 closing price.
Following this purchase, he directly owns 200,878 common shares. In connection with a July 1, 2026 amendment to his employment agreement, he was also granted 773,630 stock options under the Third Amended 2021 Stock Incentive Plan, exercisable at $0.73 per share, vesting ratably over eighteen months and expiring in 2033.
Castellum, Inc. reported that General Counsel and Secretary Tammy L. Martin acquired additional common stock through the company’s 2025 Employee Stock Purchase Plan. On March 31, 2026, she obtained 1,329 shares of common stock at $0.4544 per share, a 15% discount to the March 30, 2026 NYSE American closing price. Following this transaction, she directly holds 13,829 shares of Castellum common stock.
Castellum, Inc. Chief Financial Officer and Treasurer David T. Bell acquired 1,329 shares of common stock, increasing his direct holdings to 16,053 shares. The shares were obtained under Castellum’s 2025 Employee Stock Purchase Plan at a per share price of $0.4544.
According to the plan terms, the purchase price reflected a 15% discount to the closing price of Castellum’s common stock on the NYSE American LLC on March 30, 2026, making this a routine compensation-related stock purchase rather than an open-market trade.
Castellum, Inc. Chief Operating Officer Andrew Merriman acquired 1,329 shares of common stock through the company’s 2025 Employee Stock Purchase Plan at a per share purchase price of $0.4544. Following this plan purchase, he directly holds a total of 537,329 Castellum common shares.
Castellum, Inc. director Charles Thomas McMillen reported an open-market sale of 30,000 shares of common stock at an average price of $0.7043 per share. After this transaction, he directly holds 231,015 shares of Castellum common stock.
Castellum, Inc. President and Chief Executive Officer Glen R. Ives bought 2,000 shares of common stock in an open-market transaction at a price of $0.6157 per share. Following this purchase, he directly owns 199,616 shares of Castellum common stock.
Castellum, Inc. Chief Operating Officer Andrew Merriman reported an open-market purchase of common stock. He bought 2,000 shares at a price of $0.6426 per share. After this transaction, he directly owns 536,000 shares, so the purchase increases an already substantial existing stake by a relatively small amount.
Castellum, Inc. President and Chief Executive Officer Glen R. Ives reported an open-market purchase of common stock. On March 26, 2026, he bought 10,000 shares of Castellum common stock at $0.6649 per share. Following this transaction, his direct holdings total 197,616 shares of common stock.
Castellum, Inc. director Charles Thomas McMillen sold shares in an open-market transaction. On March 18, 2026, he sold 55,000 shares of Common Stock at an average price of $0.8018 per share. After this sale, he continues to hold 261,015 shares directly, meaning he retained the majority of his stake.
Castellum, Inc. Chief Operating Officer Andrew Merriman bought shares on the open market. On this Form 4, he purchased 3,000 shares of common stock at an average price of $0.7983 per share. Following this transaction, he directly owns 534,000 shares, indicating a modest increase in his personal stake.
Castellum, Inc. director and executive officer Jay O. Wright reported a personal stock transaction involving the company’s common shares. On 12/19/2025, he sold 30,000 shares of Castellum common stock at a price of $1.05 per share. After this sale, he beneficially owned 7,134,973 shares directly. This filing reflects an insider’s change in ownership and does not represent a transaction by the company itself.
Castellum, Inc. insider Jay O. Wright, a director and officer (General Counsel, Secretary and EVP - Strategy), reported sales of company common stock. On 12/15/2025 he sold 6,000 shares at $1.103 per share, and on 12/16/2025 he sold 12,000 shares at $1.073 per share, both coded as sale transactions.
Following these trades, he directly beneficially owned 7,176,973 shares after the first transaction and 7,164,973 shares after the second transaction, with all holdings reported as direct ownership.
Castellum, Inc. director and executive Jay O. Wright reported open-market sales of company common stock. On 12/10/2025, he sold 127,000 shares at a price of $1.207 per share. On 12/11/2025, he sold 50,000 shares at $1.161 per share, followed by 11,000 shares at $1.159 per share on 12/12/2025. After these transactions, Wright beneficially owned 7,182,973 shares of Castellum common stock directly.
Castellum, Inc. insider reports stock sales in Form 4 filing. A director and officer of Castellum, Inc. (serving as General Counsel, Secretary and EVP - Strategy) reported two open-market sales of common stock. On 11/28/2025, the insider sold 18,000 shares at a price of $1.055 per share. On 12/01/2025, the insider sold an additional 35,000 shares at $1.05 per share. After these transactions, the reporting person beneficially owns 7,370,973 shares of Castellum common stock directly.
Castellum, Inc. (CTM) reported insider share sales by a senior executive and director. The reporting person, who serves as General Counsel, Secretary and EVP - Strategy and is also a director and other related person, filed a Form 4 as an individual filer. On 11/14/2025, they sold 90,000 shares of common stock at $1.15 per share, and on 11/17/2025 they sold an additional 10,000 shares at $1.156 per share, both coded as open-market sales (transaction code "S").
After these transactions, the reporting person beneficially owned 7,423,973 shares of Castellum common stock in direct form. The form includes a checkbox to indicate that a transaction was made pursuant to a Rule 10b5-1(c) trading plan intended to satisfy affirmative defense conditions, though no additional explanatory remarks are provided.
Castellum, Inc. (CTM) insider Form 4: A reporting person who is a Director, 10% Owner, and Officer (General Counsel, Secretary; EVP - Strategy) reported open‑market sales of common stock. The transactions were 60,000 shares on 11/11/2025 at $1.18 and 160,000 shares on 11/13/2025 at $1.165. Following these sales, the insider directly beneficially owns 7,523,973 shares.
Castellum, Inc. (CTM) reported an insider equity award. Chief Financial Officer David T. Bell received 225,000 stock options on November 11, 2025 under the Second Amended 2021 Stock Incentive Plan. The options have a $1.19 exercise price and expire on November 10, 2032. They vest ratably over twenty months, beginning December 1, 2025.
Castellum (CTM) reported an insider equity grant. Chief Operating Officer Andrew Merriman was awarded 275,000 stock options on November 11, 2025 under the Second Amended 2021 Stock Incentive Plan at an exercise price of $1.19 per share. The options vest ratably over twenty months, beginning December 1, 2025, and expire on November 10, 2032. Following the grant, 275,000 derivative securities are beneficially owned directly.
Castellum, Inc. (CTM) reported a director equity grant. On 11/11/2025, director C. Thomas McMillen was granted 100,000 stock options with an exercise price of $1.19 per share under the Second Amended 2021 Stock Incentive Plan.
The options relate to 100,000 shares of common stock, vesting ratably over twenty months commencing December 1, 2025, and expiring on 11/10/2032. Following the grant, 100,000 derivative securities were beneficially owned, held directly. The filing classifies the transaction as an acquisition of derivative securities as compensation for board service.
Castellum, Inc. (CTM) disclosed an insider equity award. Director Bernard S. Champoux was granted 100,000 stock options on 11/11/2025 with an exercise price of $1.19 per share under the Second Amended 2021 Stock Incentive Plan. The options vest ratably over twenty months starting December 1, 2025 and expire on 11/10/2032. The filing lists ownership as Direct (D). This is a routine compensation grant to a board member, not an open‑market purchase or sale.
Castellum, Inc. (CTM) reported an insider equity award. Director Mark S. Alarie received a grant of 100,000 stock options on 11/11/2025 under the Second Amended 2021 Stock Incentive Plan. The options have an exercise price of $1.19 per share and an expiration date of 11/10/2032.
The award was granted as compensation for service on the Board and vests ratably over 20 months starting December 1, 2025. Following the transaction, Mr. Alarie beneficially owned 100,000 stock options, held directly. The option grant price was recorded at $0 as an award (no purchase cost at grant).
Castellum, Inc. (CTM) reported that CEO and President Glen R. Ives received an equity award. On November 11, 2025, he was granted 500,000 stock options with an exercise price of $1.19 per share under the Second Amended 2021 Stock Incentive Plan. The options cover the right to purchase 500,000 shares of common stock, vesting ratably over twenty months starting December 1, 2025, and expiring November 10, 2032.
Castellum, Inc. (CTM) reported an insider equity award. Director John F. Campbell received 100,000 stock options granted on November 11, 2025 under the Second Amended 2021 Stock Incentive Plan at an exercise price of $1.19 per share.
The options are exercisable for 100,000 shares of common stock, vesting ratably over twenty months starting December 1, 2025, and carry an expiration date of November 10, 2032. The grant price for the derivative security is listed as $0 at issuance, and the ownership form is direct.