As of March 23, 2026, the three largest insider holders of OSS are Steve D Cooper (TenPercentOwner, 1.92Mn shares), Joseph M. Jr. Manko (Director, 1.17Mn shares), Michael Knowles (Chief Executive Officer, 648.06K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Steve D Cooper | 0 | 1,923,572 | 24 Jan, 2024 | |
| Joseph M. Jr. Manko | 0 | 1,174,899 | 15 Aug, 2024 | |
| Michael Knowles | Chief Executive Officer | 648,058 | 0 | 24 Feb, 2026 |
| David Raun | 425,597 | 0 | 03 Apr, 2024 | |
| Kenneth F Potashner | 398,601 | 0 | 11 Jul, 2024 | |
| James Ison | Cpo | 141,907 | 231,148 | 24 Feb, 2026 |
| John W Jr. Morrison | Chief Financial Officer | 305,381 | 0 | 25 Sep, 2024 |
| Daniel G. Gabel | Chief Financial Officer | 155,509 | 0 | 24 Feb, 2026 |
| Gregory W Matz | 74,930 | 0 | 23 May, 2025 | |
| Jack Harrison | 71,984 | 0 | 21 Mar, 2022 | |
| Gioia Messinger | 49,690 | 0 | 03 Jul, 2024 | |
| Mitchell H Herbets | 42,000 | 0 | 27 May, 2025 | |
| Kimberly C. Sentovich | 39,266 | 0 | 21 Mar, 2022 | |
| Teresita M. Lowman | 29,930 | 0 | 21 Mar, 2022 | |
| Joseph M. Jr. Manko | 21,000 | 0 | 03 Jul, 2024 | |
| Michael J. Dumont | 21,000 | 0 | 23 May, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 07 Feb, 2026 | James Ison | Common Stock | A | 34,313 | $0.00 | 155,836 | D | A |
| 07 Feb, 2026 | Daniel G. Gabel | Common Stock | D | 7,799 | $9.24 | 155,509 | D | F |
| 07 Feb, 2026 | Michael Knowles | Common Stock | D | 13,298 | $9.24 | 654,708 | D | F |
| 07 Feb, 2026 | James Ison | Common Stock | D | 6,546 | $9.24 | 149,290 | D | F |
| 15 Feb, 2026 | Michael Knowles | Common Stock | D | 6,650 | $8.70 | 648,058 | D | F |
| 07 Feb, 2026 | James Ison | Common Stock | D | 8,213 | $0.00 | 141,077 | D | G |
| 07 Feb, 2026 | James Ison | Common Stock | A | 8,213 | $0.00 | 226,885 | I | G |
| 15 Feb, 2026 | James Ison | Common Stock | D | 3,120 | $8.70 | 146,170 | D | F |
| 15 Feb, 2026 | James Ison | Common Stock | D | 4,263 | $0.00 | 141,907 | D | G |
| 15 Feb, 2026 | James Ison | Common Stock | A | 4,263 | $0.00 | 231,148 | I | G |
| 07 Feb, 2026 | Daniel G. Gabel | Common Stock | A | 55,239 | $0.00 | 163,308 | D | A |
| 07 Feb, 2026 | Michael Knowles | Common Stock | A | 101,862 | $0.00 | 668,006 | D | A |
| 31 Dec, 2025 | Michael Knowles | Common Stock | D | 19,075 | $7.18 | 566,144 | D | F |
| 31 Dec, 2025 | Daniel G. Gabel | Common Stock | D | 3,215 | $7.18 | 108,069 | D | F |
| 20 Aug, 2025 | James Ison | Common Stock | D | 3,113 | $5.26 | 125,794 | D | F |
| 20 Aug, 2025 | James Ison | Common Stock | D | 4,271 | $0.00 | 121,523 | D | G |
| 20 Aug, 2025 | James Ison | Common Stock | A | 4,271 | $0.00 | 218,672 | I | G |
| 21 May, 2025 | Mitchell H Herbets | Common Stock | A | 21,000 | $0.00 | 42,000 | D | A |
| 21 May, 2025 | Gregory W Matz | Common Stock | A | 21,000 | $0.00 | 74,930 | D | A |
| 21 May, 2025 | Michael J. Dumont | Common Stock | A | 21,000 | $0.00 | 21,000 | D | F |