As of May 30, 2026, the three largest insider holders of SPRO are Capital Management, Llc Aquilo (TenPercentOwner, 5.22Mn shares), Capital Management, Llc Aquilo (TenPercentOwner, 4.36Mn shares), Capital Management, Llc Aquilo (TenPercentOwner, 3.42Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| John C Jr Pottage | - | 75,000 | 0 | 12 Jun, 2025 |
| Milind Deshpande | - | 91,454 | 0 | 12 Jun, 2025 |
| Tamara L Joseph | Chief Legal Officer | 531,615 | 0 | 05 Feb, 2024 |
| Patrick V.J.J. Vink | - | 75,000 | 0 | 12 Jun, 2025 |
| Scott Thomas Jackson | - | 75,000 | 0 | 12 Jun, 2025 |
| Capital Management, Llc Aquilo | - | 0 | 5,223,498 | 16 Mar, 2022 |
| Cynthia Smith | - | 75,000 | 0 | 12 Jun, 2025 |
| Ankit Mahadevia | Ceo And President | 703,294 | 0 | 02 Sep, 2025 |
| Cristina Larkin | Chief Operating Officer | 63,581 | 0 | 03 Feb, 2022 |
| David A. Melnick | Chief Medical Officer | 62,081 | 0 | 03 Feb, 2022 |
| Sath Shukla | Ceo President | 1,736,883 | 0 | 05 Feb, 2025 |
| Timothy Keutzer | Chief Operating Officer | 742,506 | 0 | 09 Feb, 2026 |
| Kathleen Tregoning | - | 75,000 | 0 | 12 Jun, 2025 |
| Esther Rajavelu | Cfo Cbo | 1,012,091 | 0 | 09 Feb, 2026 |
| Kamal Hamed | Chief Medical Officer | 788,117 | 0 | 05 Feb, 2024 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 06 Feb, 2026 | Esther Rajavelu | Common Stock | D | 37,101 | $2.36 | 1,062,907 | D | S |
| 06 Feb, 2026 | Timothy Keutzer | Common Stock | D | 18,652 | $2.36 | 742,506 | D | S |
| 06 Feb, 2026 | Esther Rajavelu | Common Stock | D | 50,816 | $2.36 | 1,012,091 | D | S |
| 02 Feb, 2026 | Esther Rajavelu | Common Stock | A | 249,000 | $0.00 | 1,118,450 | D | A |
| 02 Feb, 2026 | Timothy Keutzer | Common Stock | A | 68,000 | $0.00 | 807,744 | D | A |
| 02 Feb, 2026 | Esther Rajavelu | Common Stock | D | 18,442 | $2.20 | 1,100,008 | D | S |
| 02 Feb, 2026 | Timothy Keutzer | Common Stock | D | 18,891 | $2.20 | 788,853 | D | S |
| 02 Feb, 2026 | Esther Rajavelu | Stock Option (Right to Buy) | A | 498,000 | $0.00 | 498,000 | D | A |
| 03 Feb, 2026 | Timothy Keutzer | Common Stock | D | 24,224 | $2.14 | 764,629 | D | S |
| 04 Feb, 2026 | Timothy Keutzer | Common Stock | D | 3,471 | $2.24 | 761,158 | D | S |
| 02 Feb, 2026 | Timothy Keutzer | Stock Option (Right to Buy) | A | 137,000 | $0.00 | 137,000 | D | A |
| 07 Nov, 2025 | Esther Rajavelu | Common Stock | D | 40,270 | $2.37 | 869,450 | D | S |
| 28 Aug, 2025 | Ankit Mahadevia | Common Stock | D | 6,572 | $1.97 | 703,294 | D | S |
| 28 Aug, 2025 | Timothy Keutzer | Common Stock | D | 1,695 | $1.97 | 739,744 | D | S |
| 12 Jun, 2025 | Milind Deshpande | Common Stock | A | 20,000 | $0.00 | 91,454 | D | A |
| 12 Jun, 2025 | Cynthia Smith | Common Stock | A | 20,000 | $0.00 | 75,000 | D | A |
| 12 Jun, 2025 | Kathleen Tregoning | Common Stock | A | 20,000 | $0.00 | 75,000 | D | A |
| 12 Jun, 2025 | John C Jr Pottage | Common Stock | A | 20,000 | $0.00 | 75,000 | D | A |
| 12 Jun, 2025 | Patrick V.J.J. Vink | Common Stock | A | 20,000 | $0.00 | 75,000 | D | A |
| 12 Jun, 2025 | Patrick V.J.J. Vink | Common Stock | A | 20,000 | $0.00 | 75,000 | D | A |