ABOS Insider Transactions
90 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–90; provenance stays internal.
ABOS insiders transaction timeline
PurchaseSale
| Insider profile | Role | Date | Transaction | Shares | Price |
|---|---|---|---|---|---|
| Porter Derrell | Director | 2026-06-17 | Sale | 13,040.0 | $2.33 |
| Porter Derrell | Director | 2026-06-16 | Sale | 12,800.0 | $2.33 |
| Porter Derrell | Director | 2026-06-15 | Sale | 6,460.0 | $2.35 |
| Fountain Nathan B | Director | 2026-06-09 | Sale | 6,400.0 | $2.23 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-03-06 | Sale | 2,090.0 | $3.26 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-02-27 | Sale | 9,406.0 | $3.01 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-28 | Sale | 2,671.0 | $3.0 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-26 | Sale | 15,085.0 | $3.0 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-23 | Sale | 5,633.0 | $1.9 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-22 | Sale | 1,054.0 | $1.84 |
| Siemers Eric | Chief Medical Officer | 2026-01-22 | Sale | 895.0 | $1.82 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-22 | Sale | 1,687.0 | $1.86 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-22 | Sale | 2,689.0 | $1.88 |
| Barton Russell | Chief Operating Officer | 2026-01-22 | Sale | 462.0 | $1.84 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-21 | Sale | 2,247.0 | $1.81 |
| Siemers Eric | Chief Medical Officer | 2026-01-21 | Sale | 2,331.0 | $1.8 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-21 | Sale | 2,473.0 | $1.81 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-21 | Sale | 9,346.0 | $1.81 |
| Barton Russell | Chief Operating Officer | 2026-01-21 | Sale | 2,315.0 | $1.81 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-12 | Sale | 8,548.0 | $1.71 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-12 | Sale | 5,388.0 | $1.73 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-09 | Sale | 5,200.0 | $1.76 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-09 | Sale | 12,941.0 | $1.76 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-08 | Sale | 6,888.0 | $1.82 |
| Barton Russell | Chief Operating Officer | 2026-01-08 | Sale | 3,530.0 | $1.86 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-08 | Sale | 30,092.0 | $1.82 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-08 | Sale | 6,819.0 | $1.82 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-08 | Sale | 8,143.0 | $1.82 |
| Doherty James J. | President and CDO | 2026-01-08 | Sale | 6,467.0 | $1.82 |
| Doherty James J. | President and CDO | 2026-01-07 | Sale | 1,700.0 | $1.99 |
| Schacterle Amy | Chief Regulatory Officer | 2026-01-07 | Sale | 1,097.0 | $1.98 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-07 | Sale | 1,700.0 | $1.99 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-07 | Sale | 4,105.0 | $2.0 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-07 | Sale | 37,755.0 | $1.99 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-07 | Sale | 10,070.0 | $1.99 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-07 | Sale | 1,700.0 | $1.99 |
| Barton Russell | Chief Operating Officer | 2026-01-07 | Sale | 1,700.0 | $1.99 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-06 | Sale | 5,100.0 | $1.97 |
| Siemers Eric | Chief Medical Officer | 2026-01-06 | Sale | 6,834.0 | $1.97 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-06 | Sale | 5,102.0 | $1.97 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-06 | Sale | 3,801.0 | $1.97 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-06 | Sale | 7,097.0 | $1.97 |
| Barton Russell | Chief Operating Officer | 2026-01-06 | Sale | 3,618.0 | $1.97 |
| Zuga Matt | CFO & Chief Business Officer | 2026-01-05 | Sale | 4,000.0 | $1.96 |
| Siemers Eric | Chief Medical Officer | 2026-01-05 | Sale | 4,000.0 | $1.96 |
| OConnell Daniel Joseph | Chief Executive Officer | 2026-01-05 | Sale | 4,649.0 | $1.97 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2026-01-05 | Sale | 4,000.0 | $1.96 |
| Barton Russell | Chief Operating Officer | 2026-01-05 | Sale | 4,000.0 | $1.96 |
| Zuga Matt | CFO & Chief Business Officer | 2025-01-23 | Sale | 28,902.0 | $1.72 |
| Zuga Matt | CFO & Chief Business Officer | 2025-01-21 | Sale | 4,364.0 | $1.6 |
| OConnell Daniel Joseph | Chief Executive Officer | 2025-01-21 | Sale | 12,619.0 | $1.59 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2025-01-21 | Sale | 3,418.0 | $1.59 |
| Barton Russell | Chief Operating Officer | 2025-01-21 | Sale | 2,914.0 | $1.61 |
| Siemers Eric | Chief Medical Officer | 2025-01-21 | Sale | 3,219.0 | $1.59 |
| OConnell Daniel Joseph | Chief Executive Officer | 2025-01-03 | Sale | 47,778.0 | $1.84 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2025-01-03 | Sale | 11,122.0 | $1.84 |
| Barton Russell | Chief Operating Officer | 2025-01-03 | Sale | 7,636.0 | $1.86 |
| Zuga Matt | CFO & Chief Business Officer | 2025-01-03 | Sale | 13,235.0 | $1.84 |
| Siemers Eric | Chief Medical Officer | 2025-01-03 | Sale | 10,859.0 | $1.85 |
| OConnell Daniel Joseph | President and CEO | 2024-01-19 | Sale | 15,200.0 | $3.47 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 2024-01-19 | Sale | 8,933.0 | $3.48 |
| Zuga Matt | CFO & Chief Business Officer | 2024-01-18 | Sale | 4,242.0 | $3.71 |
| Siemers Eric | Chief Medical Officer | 2024-01-18 | Sale | 3,124.0 | $3.71 |
| Barton Russell | Chief Operating Officer | 2024-01-18 | Sale | 2,833.0 | $3.73 |
| Ives Jeffrey L. | Director | 2023-08-17 | Sale | 2,800.0 | $6.66 |
| Ives Jeffrey L. | Director | 2023-08-17 | Sale | 39,149.0 | $6.48 |
| RA Capital Healthcare Fund LP | Director,TenPercentOwner | 2023-07-21 | Purchase | 5,161,290.0 | $7.75 |
| RA CAPITAL MANAGEMENT, L.P. | Director,TenPercentOwner | 2023-07-21 | Purchase | 5,161,290.0 | $7.75 |
| Kolchinsky Peter | Director,TenPercentOwner | 2023-07-21 | Purchase | 5,161,290.0 | $7.75 |
| Shah Rajeev M. | Director,TenPercentOwner | 2023-07-21 | Purchase | 5,161,290.0 | $7.75 |
| RA Capital Nexus Fund II, L.P. | Director | 2023-07-21 | Purchase | 5,161,290.0 | $7.75 |
| Manning Paul B | TenPercentOwner | 2021-07-06 | Purchase | 312,500.0 | $16.0 |
| Stalfort John A III | Director | 2021-07-06 | Purchase | 35,000.0 | $16.0 |
| Hardie Robert D. | TenPercentOwner | 2021-07-06 | Purchase | 312,500.0 | $16.0 |
| Hardie Robert D. | TenPercentOwner | 2021-07-06 | Purchase | 750,000.0 | $16.0 |
| Fountain Nathan B | Director | 2021-07-06 | Purchase | 6,250.0 | $16.0 |
| RA Capital Healthcare Fund LP | Director,TenPercentOwner | 2021-07-06 | Purchase | 115,668.0 | $16.0 |
| RA CAPITAL MANAGEMENT, L.P. | Director,TenPercentOwner | 2021-07-06 | Purchase | 115,668.0 | $16.0 |
| Kolchinsky Peter | Director,TenPercentOwner | 2021-07-06 | Purchase | 115,668.0 | $16.0 |
| Shah Rajeev M. | Director,TenPercentOwner | 2021-07-06 | Purchase | 115,668.0 | $16.0 |
| RA Capital Nexus Fund II, L.P. | Director | 2021-07-06 | Purchase | 115,668.0 | $16.0 |
| RA Capital Healthcare Fund LP | Director,TenPercentOwner | 2021-07-06 | Purchase | 1,759,332.0 | $16.0 |
| RA CAPITAL MANAGEMENT, L.P. | Director,TenPercentOwner | 2021-07-06 | Purchase | 1,759,332.0 | $16.0 |
| Kolchinsky Peter | Director,TenPercentOwner | 2021-07-06 | Purchase | 1,759,332.0 | $16.0 |
| Shah Rajeev M. | Director,TenPercentOwner | 2021-07-06 | Purchase | 1,759,332.0 | $16.0 |
| RA Capital Nexus Fund II, L.P. | Director | 2021-07-06 | Purchase | 1,759,332.0 | $16.0 |
| Sands Capital Life Sciences Pulse Fund, LLC | TenPercentOwner | 2021-07-06 | Purchase | 450,000.0 | $14.88 |
| Sands Capital Ventures Discovery Fund III, L.P. | TenPercentOwner | 2021-07-06 | Purchase | 450,000.0 | $14.88 |
| Sands Capital Global Venture Fund II, L.P. | TenPercentOwner | 2021-07-06 | Purchase | 450,000.0 | $14.88 |
| SANDS FRANK M. | TenPercentOwner | 2021-07-06 | Purchase | 450,000.0 | $14.88 |