Castellum's top three insider shareholders as of March 23, 2026 are Jay O Wright (See Remarks, 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 | See Remarks | 0 | 9,097,993 | 02 Dec, 2022 |
| Mark C Fuller | Chief Executive Officer | 0 | 8,863,453 | 20 Oct, 2022 |
| Jay O Wright | General Counsel, Secretary | 7,134,973 | 0 | 22 Dec, 2025 |
| Mark C Fuller | 6,113,659 | 0 | 03 Sep, 2025 | |
| Emil Kaunitz | 1,999,856 | 0 | 21 Dec, 2022 | |
| Andrew Merriman | Chief Operating Officer | 534,000 | 0 | 18 Mar, 2026 |
| Charles Thomas Mcmillen | 261,015 | 0 | 20 Mar, 2026 | |
| Bernard S Champoux | 104,536 | 0 | 23 Mar, 2023 | |
| Patricia Frost | 62,920 | 0 | 23 Mar, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
| 16 Dec, 2025 | Jay O Wright | Common Stock | D | 12,000 | $1.07 | 7,164,973 | D | S |
| 10 Dec, 2025 | Jay O Wright | Common Stock | D | 127,000 | $1.21 | 7,243,973 | D | S |
| 11 Dec, 2025 | Jay O Wright | Common Stock | D | 50,000 | $1.16 | 7,193,973 | D | S |
| 12 Dec, 2025 | Jay O Wright | Common Stock | D | 11,000 | $1.16 | 7,182,973 | D | S |
| 28 Nov, 2025 | Jay O Wright | Common Stock | D | 18,000 | $1.06 | 7,405,973 | D | S |
| 01 Dec, 2025 | Jay O Wright | Common Stock | D | 35,000 | $1.05 | 7,370,973 | D | S |
| 14 Nov, 2025 | Jay O Wright | Common Stock | D | 90,000 | $1.15 | 7,433,973 | D | S |
| 17 Nov, 2025 | Jay O Wright | Common Stock | D | 10,000 | $1.16 | 7,423,973 | D | S |
| 11 Nov, 2025 | Bernard S Champoux | Stock Options | A | 100,000 | $0.00 | 100,000 | D | A |
| 11 Nov, 2025 | Jay O Wright | Common Stock | D | 60,000 | $1.18 | 7,683,973 | D | S |
| 11 Nov, 2025 | Charles Thomas Mcmillen | Stock Options | A | 100,000 | $0.00 | 100,000 | D | A |
| 11 Nov, 2025 | Andrew Merriman | Stock Options | A | 275,000 | $0.00 | 275,000 | D | A |
| 11 Nov, 2025 | Glen R Ives | Stock Options | A | 500,000 | $0.00 | 500,000 | D | A |
| 13 Nov, 2025 | Jay O Wright | Common Stock | D | 160,000 | $1.17 | 7,523,973 | D | S |
| 15 Sep, 2025 | Jay O Wright | Common Stock | D | 50,000 | $1.10 | 7,793,973 | D | S |
| 16 Sep, 2025 | Jay O Wright | Common Stock | D | 50,000 | $1.11 | 7,743,973 | D | S |