As of June 06, 2026, the three largest insider holders of AKBA are John P. Butler (Ceo And President, 3.37Mn shares), Steven Keith Burke (Svp, Chief Medical Officer, 948.43K shares), Erik Ostrowski (Svp, Cfo, Cbo Treasurer, 672.63K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Leanne M Zumwalt | - | 109,400 | 0 | 11 Jun, 2025 |
| Michael W Rogers | - | 161,729 | 0 | 11 Jun, 2025 |
| Adrian Adams | - | 200,500 | 0 | 11 Jun, 2025 |
| Steven C Gilman | - | 152,830 | 0 | 11 Jun, 2025 |
| John P. Butler | Ceo And President | 3,367,064 | 0 | 05 Mar, 2026 |
| Nicole R. Hadas | Svp, Chief Legal Officer | 651,243 | 0 | 14 May, 2024 |
| Cynthia Smith | - | 160,933 | 0 | 11 Jun, 2025 |
| Steven Keith Burke | Svp, Chief Medical Officer | 948,432 | 0 | 04 Feb, 2026 |
| Nicholas Grund | Chief Commercial Officer | 561,750 | 0 | 04 Feb, 2026 |
| Michel Dahan | Svp, Chief Operating Officer | 672,092 | 0 | 14 May, 2024 |
| David A Spellman | Svp, Cfo And Treasurer | 446,483 | 0 | 18 May, 2023 |
| Erik Ostrowski | Svp, Cfo, Cbo Treasurer | 672,635 | 0 | 04 Feb, 2026 |
| Dell Faulkingham | Svp, Cco | 173,841 | 0 | 02 Mar, 2022 |
| Ellen Snow | Svp, Cfo And Treasurer | 519,300 | 0 | 02 Feb, 2024 |
| Myles Wolf | - | 133,381 | 0 | 11 Jun, 2025 |
| Violetta Cotreau | Svp, Chief Accounting Officer | 219,954 | 0 | 16 May, 2022 |
| Ron Frieson | - | 129,500 | 0 | 11 Jun, 2025 |
| Richard C Malabre | Svp, Chief Accounting Officer | 299,390 | 0 | 04 Feb, 2026 |
| Carolyn M. Rucci | Svp, Chief Legal Officer | 588,378 | 0 | 04 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Philip J. Vickers | Stock Option (Right to buy) | A | 214,400 | $0.00 | 214,400 | D | A |
| 01 Apr, 2026 | Philip J. Vickers | Stock Option (Right to buy) | A | 214,400 | $0.00 | 214,400 | D | A |
| 04 Mar, 2026 | John P. Butler | Common Stock | A | 69,270 | $1.25 | 3,367,064 | D | P |
| 02 Feb, 2026 | Steven Keith Burke | Common Stock | D | 21,582 | $1.39 | 994,508 | D | S |
| 02 Feb, 2026 | Richard C Malabre | Common Stock | D | 36,142 | $1.39 | 312,772 | D | S |
| 02 Feb, 2026 | Erik Ostrowski | Common Stock | D | 34,951 | $1.39 | 672,635 | D | S |
| 02 Feb, 2026 | Nicholas Grund | Common Stock | D | 53,585 | $1.39 | 592,994 | D | S |
| 02 Feb, 2026 | Erik Ostrowski | Common Stock | D | 34,951 | $1.39 | 672,635 | D | S |
| 02 Feb, 2026 | Carolyn M. Rucci | Common Stock | D | 16,846 | $1.39 | 641,304 | D | S |
| 02 Feb, 2026 | Nicholas Grund | Common Stock | D | 53,585 | $1.39 | 592,994 | D | S |
| 02 Feb, 2026 | Carolyn M. Rucci | Common Stock | D | 16,846 | $1.39 | 641,304 | D | S |
| 02 Feb, 2026 | John P. Butler | Common Stock | D | 46,660 | $1.39 | 3,417,189 | D | S |
| 02 Feb, 2026 | Richard C Malabre | Common Stock | D | 36,142 | $1.39 | 312,772 | D | S |
| 02 Feb, 2026 | Richard C Malabre | Common Stock | D | 13,382 | $1.39 | 299,390 | D | S |
| 02 Feb, 2026 | Carolyn M. Rucci | Common Stock | D | 25,382 | $1.39 | 615,922 | D | S |
| 02 Feb, 2026 | Steven Keith Burke | Common Stock | D | 25,375 | $1.39 | 969,133 | D | S |
| 02 Feb, 2026 | Richard C Malabre | Common Stock | D | 13,382 | $1.39 | 299,390 | D | S |
| 02 Feb, 2026 | Nicholas Grund | Common Stock | D | 31,244 | $1.39 | 561,750 | D | S |
| 02 Feb, 2026 | Nicholas Grund | Common Stock | D | 31,244 | $1.39 | 561,750 | D | S |
| 02 Feb, 2026 | Carolyn M. Rucci | Common Stock | D | 25,382 | $1.39 | 615,922 | D | S |