Castellum's three largest insider shareholders as of June 06, 2026 are Jay O Wright (Director, 9.10Mn shares), Mark C Fuller (Chief Executive Officer, 8.86Mn shares), Jay O Wright (General Counsel, Secretary, 7.13Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jay O Wright | - | 0 | 9,097,993 | 02 Dec, 2022 |
| Tammy L Martin | General Counsel And Secretary | 13,829 | 0 | 31 Mar, 2026 |
| Charles Thomas Mcmillen | - | 231,015 | 0 | 27 Mar, 2026 |
| David T Bell | Chief Financial Officer | 16,053 | 0 | 31 Mar, 2026 |
| Mark C Fuller | Chief Executive Officer | 0 | 8,863,453 | 20 Oct, 2022 |
| Emil Kaunitz | - | 1,999,856 | 0 | 21 Dec, 2022 |
| Bernard S Champoux | - | 104,536 | 0 | 23 Mar, 2023 |
| Glen R Ives | President | 199,616 | 0 | 27 Mar, 2026 |
| Mark S Alarie | - | 112,920 | 0 | 23 Mar, 2023 |
| Patricia Frost | - | 62,920 | 0 | 23 Mar, 2023 |
| John Francis Campbell | - | 126,537 | 0 | 23 Mar, 2023 |
| Andrew Merriman | Chief Operating Officer | 537,329 | 0 | 31 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 31 Mar, 2026 | Andrew Merriman | Common Stock | A | 1,329 | $0.45 | 537,329 | D | A |
| 31 Mar, 2026 | David T Bell | Common Stock | A | 1,329 | $0.45 | 16,053 | D | A |
| 31 Mar, 2026 | Tammy L Martin | Common Stock | A | 1,329 | $0.45 | 13,829 | D | A |
| 31 Mar, 2026 | Andrew Merriman | Common Stock | A | 1,329 | $0.45 | 537,329 | D | A |
| 27 Mar, 2026 | Andrew Merriman | Common Stock | A | 2,000 | $0.64 | 536,000 | D | P |
| 27 Mar, 2026 | Andrew Merriman | Common Stock | A | 2,000 | $0.64 | 536,000 | D | P |
| 27 Mar, 2026 | Glen R Ives | Common Stock | A | 2,000 | $0.62 | 199,616 | D | P |
| 25 Mar, 2026 | Charles Thomas Mcmillen | Common Stock | D | 30,000 | $0.70 | 231,015 | D | S |
| 27 Mar, 2026 | Glen R Ives | Common Stock | A | 2,000 | $0.62 | 199,616 | D | P |
| 26 Mar, 2026 | Glen R Ives | Common Stock | A | 10,000 | $0.66 | 197,616 | D | P |
| 26 Mar, 2026 | Glen R Ives | Common Stock | A | 10,000 | $0.66 | 197,616 | D | P |
| 18 Mar, 2026 | Charles Thomas Mcmillen | Common Stock | D | 55,000 | $0.80 | 261,015 | D | S |
| 18 Mar, 2026 | Andrew Merriman | Common Stock | A | 3,000 | $0.80 | 534,000 | D | P |
| 18 Mar, 2026 | Andrew Merriman | Common Stock | A | 3,000 | $0.80 | 534,000 | D | P |
| 19 Dec, 2025 | Jay O Wright | Common Stock | D | 30,000 | $1.05 | 7,134,973 | D | S |
| 19 Dec, 2025 | Jay O Wright | Common Stock | D | 30,000 | $1.05 | 7,134,973 | D | S |
| 15 Dec, 2025 | Jay O Wright | Common Stock | D | 6,000 | $1.10 | 7,176,973 | D | S |
| 15 Dec, 2025 | Jay O Wright | Common Stock | D | 6,000 | $1.10 | 7,176,973 | D | S |
| 16 Dec, 2025 | Jay O Wright | Common Stock | D | 12,000 | $1.07 | 7,164,973 | D | S |
| 16 Dec, 2025 | Jay O Wright | Common Stock | D | 12,000 | $1.07 | 7,164,973 | D | S |