As of March 23, 2026, the three largest insider holders of BVS are Stavros G. Vizirgianakis (Director, 2.78Mn shares), William A Hawkins (Director, 257.85K shares), Mark Leonard Singleton (Svp Cfo, 151.81K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Stavros G. Vizirgianakis | 2,781,888 | 0 | 22 Jun, 2022 | |
| William A Hawkins | 257,851 | 0 | 04 Jun, 2025 | |
| Mark Leonard Singleton | Svp Cfo | 151,812 | 0 | 18 Feb, 2026 |
| Alessandra Pavesio | Svp Chief Science Officer | 148,309 | 0 | 05 Apr, 2022 |
| Anthony D'Adamio | Svp General Counsel | 138,069 | 0 | 18 Feb, 2026 |
| Robert E Claypoole | President And Ceo | 116,997 | 0 | 13 Jan, 2026 |
| Guy P Nohra | 116,610 | 0 | 08 Dec, 2025 | |
| Susan M Stalnecker | 105,957 | 0 | 04 Jun, 2025 | |
| Martin P Sutter | 85,241 | 0 | 04 Jun, 2025 | |
| Guido J Neels | 85,241 | 0 | 04 Jun, 2025 | |
| John Nosenzo | Chief Commercial Officer | 83,932 | 0 | 05 Apr, 2022 |
| Mary Kay Ladone | 78,981 | 0 | 04 Jun, 2025 | |
| Katrina J Church | Svp Chief Compliance Officer | 57,799 | 0 | 18 Feb, 2026 |
| Michelle Mcmurry-Heath | 44,997 | 0 | 13 Mar, 2026 | |
| Philip G. Cowdy | 11,700 | 0 | 05 Apr, 2022 | |
| Kenneth Michael Reali | Chief Executive Officer | 11,175 | 0 | 10 Sep, 2021 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 11 Mar, 2026 | Michelle Mcmurry-Heath | Class A Common Stock | D | 12,000 | $8.79 | 44,997 | D | S |
| 15 Feb, 2026 | Katrina J Church | Class A Common Stock | A | 4,375 | $0.00 | 59,932 | D | M |
| 15 Feb, 2026 | Mark Leonard Singleton | Class A Common Stock | A | 20,153 | $0.00 | 161,241 | D | M |
| 15 Feb, 2026 | Anthony D'Adamio | Class A Common Stock | A | 12,980 | $0.00 | 144,396 | D | M |
| 15 Feb, 2026 | Katrina J Church | Class A Common Stock | D | 2,133 | $8.27 | 57,799 | D | F |
| 15 Feb, 2026 | Anthony D'Adamio | Class A Common Stock | D | 6,327 | $8.27 | 138,069 | D | F |
| 15 Feb, 2026 | Mark Leonard Singleton | Class A Common Stock | D | 9,429 | $8.27 | 151,812 | D | F |
| 15 Feb, 2026 | Katrina J Church | Restricted Stock Units | D | 4,375 | $0.00 | 8,750 | D | M |
| 15 Feb, 2026 | Mark Leonard Singleton | Restricted Stock Units | D | 20,153 | $0.00 | 40,304 | D | M |
| 15 Feb, 2026 | Anthony D'Adamio | Restricted Stock Units | D | 12,980 | $0.00 | 25,960 | D | M |
| 09 Jan, 2026 | Robert E Claypoole | Class A Common Stock | A | 93,750 | $0.00 | 158,714 | D | M |
| 09 Jan, 2026 | Robert E Claypoole | Class A Common Stock | D | 41,717 | $8.03 | 116,997 | D | F |
| 09 Jan, 2026 | Robert E Claypoole | Restricted Stock Units | D | 93,750 | $0.00 | 187,500 | D | M |
| 04 Dec, 2025 | Guy P Nohra | Class A Common Stock | D | 10,000 | $7.57 | 116,610 | D | S |
| 07 Nov, 2025 | Michelle Mcmurry-Heath | Class A Common Stock | D | 17,701 | $7.42 | 56,997 | D | S |
| 02 Jun, 2025 | Guy P Nohra | Class A Common Stock | A | 26,493 | $0.00 | 126,610 | D | M |
| 02 Jun, 2025 | Martin P Sutter | Class A Common Stock | A | 26,493 | $0.00 | 85,241 | D | M |
| 02 Jun, 2025 | Susan M Stalnecker | Class A Common Stock | A | 26,493 | $0.00 | 105,957 | D | M |
| 02 Jun, 2025 | Michelle Mcmurry-Heath | Class A Common Stock | A | 26,493 | $0.00 | 74,698 | D | M |
| 02 Jun, 2025 | William A Hawkins | Class A Common Stock | A | 26,493 | $0.00 | 257,851 | D | M |