ANTX's three largest insider shareholders as of September 29, 2026 are Capital Management, L.P. Ra (TenPercentOwner, 5.14Mn shares), Capital Management, L.P. Ra (TenPercentOwner, 3.77Mn shares), Braden Michael Leonard (TenPercentOwner, 3.02Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Braden Michael Leonard | TenPercentOwner | 0 | 3,017,432 | 3,017,432 | 38.6% | 16 Jun, 2025 |
| 2 | Global Health Technology Fund, L.P. Adjuvant | TenPercentOwner | 1,995,958 | 377,542 | 2,373,500 | 30.3% | 18 Jan, 2024 |
| 3 | Robin Shane Readnour | Director | 0 | 624,765 | 624,765 | 8.0% | 11 Sep, 2026 |
| 4 | Eric Easom | Chief Executive Officer | 368,630 | 0 | 368,630 | 4.7% | 23 Feb, 2026 |
| 5 | Capital Management, L.P. Ra | TenPercentOwner | 0 | 300,853 | 300,853 | 3.8% | 13 Aug, 2024 |
| 6 | Joshua M Eizen | Chief Legal Officer | 206,554 | 0 | 206,554 | 2.6% | 10 Jul, 2026 |
| 7 | Joseph S Zakrzewski | Director | 145,538 | 0 | 145,538 | 1.9% | 11 Apr, 2025 |
| 8 | Sanjay Chanda | Chief Development Officer | 118,823 | 0 | 118,823 | 1.5% | 23 Feb, 2026 |
| 9 | Lucy Day | Chief Financial Officer | 118,363 | 0 | 118,363 | 1.5% | 23 Feb, 2026 |
| 10 | Cameron C. Iii Trenor | Chief Medical Officer | 116,667 | 0 | 116,667 | 1.5% | 16 Sep, 2026 |
| 11 | Paul Eckburg | Chief Medical Officer | 102,832 | 0 | 102,832 | 1.3% | 29 Mar, 2024 |
| 12 | Gilbert Lynn Marks | Director | 81,873 | 0 | 81,873 | 1.0% | 10 Jul, 2026 |
| 13 | Sarah Joanne Williams | Principal Accounting Officer | 66,311 | 0 | 66,311 | 0.8% | 04 Sep, 2026 |
| 14 | Kabeer Aziz | Director | 59,106 | 0 | 59,106 | 0.8% | 10 Jul, 2026 |
| 15 | Stephen David Prior | Chief Strategy Officer | 59,086 | 0 | 59,086 | 0.8% | 07 Jan, 2026 |
| 16 | Kevin Michael Krause | Chief Strategy Officer | 31,914 | 0 | 31,914 | 0.4% | 29 Mar, 2024 |
| 17 | Patricia A. Martin | Director | 18,863 | 0 | 18,863 | 0.2% | 10 Jul, 2026 |
| 18 | Margaret M Fitzpatrick | Director | 10,708 | 0 | 10,708 | 0.1% | 02 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 09 Sep, 2026 | Robin Shane Readnour | Director | Disposed S | 523 | $6.02 | $3.15K | 557,467 | Indirect |
| 09 Sep, 2026 | Robin Shane Readnour | Director | Disposed S | 585 | $6.02 | $3.52K | 624,765 | Indirect |
| 03 Sep, 2026 | Robin Shane Readnour | Director | Disposed S | 2,877 | $6.07 | $17.46K | 562,715 | Indirect |
| 03 Sep, 2026 | Robin Shane Readnour | Director | Disposed S | 3,223 | $6.07 | $19.56K | 630,644 | Indirect |
| 08 Sep, 2026 | Robin Shane Readnour | Director | Disposed S | 4,725 | $6.02 | $28.44K | 557,990 | Indirect |
| 08 Sep, 2026 | Robin Shane Readnour | Director | Disposed S | 5,294 | $6.02 | $31.86K | 625,350 | Indirect |
| 01 Sep, 2026 | Sarah Joanne Williams | Principal Accounting Officer | Disposed S | 272 | $5.53 | $1.50K | 66,311 | Direct |
| 01 Sep, 2026 | Margaret M Fitzpatrick | Director | Acquired P | 2,098 | $5.53 | $11.60K | 10,708 | Direct |
| 17 Aug, 2026 | Robin Shane Readnour | Director | Disposed S | 16,696 | $6.01 | $100.31K | 565,592 | Indirect |
| 17 Aug, 2026 | Robin Shane Readnour | Director | Disposed S | 18,706 | $6.01 | $112.39K | 633,867 | Indirect |
| 14 Aug, 2026 | Joseph S Zakrzewski | Director | Disposed G | 405,880 | $0.00 | $0 | 0 | Indirect |
| 10 Jul, 2026 | Patricia A. Martin | Director | Acquired A | 766 | $0.00 | $0 | 18,863 | Direct |
| 10 Jul, 2026 | Kabeer Aziz | Director | Acquired A | 2,852 | $0.00 | $0 | 59,106 | Direct |
| 10 Jul, 2026 | Gilbert Lynn Marks | Director | Acquired A | 2,789 | $0.00 | $0 | 81,873 | Direct |
| 08 Jul, 2026 | Joshua M Eizen | Officer | Disposed S | 5,945 | $4.17 | $24.80K | 206,554 | Direct |
| 29 May, 2026 | Sarah Joanne Williams | Principal Accounting Officer | Disposed S | 265 | $4.43 | $1.17K | 66,583 | Direct |
| 10 Apr, 2026 | Gilbert Lynn Marks | Director | Acquired A | 3,775 | $0.00 | $0 | 79,084 | Direct |
| 10 Apr, 2026 | Patricia A. Martin | Director | Acquired A | 1,192 | $0.00 | $0 | 18,097 | Direct |
| 10 Apr, 2026 | Kabeer Aziz | Director | Acquired A | 3,775 | $0.00 | $0 | 56,254 | Direct |
| 19 Mar, 2026 | Robin Shane Readnour | Director | Acquired A | 20,724 | — | — | 20,724 | Direct |