- Ownership
-
89bio, Inc. Insider Trading
* In original currency USD
Loading Data
| Transaction Date (SEC Report) |
Reporting Name | Relationship | Shrs. Owned | Type | Acq./Disp. | Shrs. Transacted | Price | Total Amount |
|---|---|---|---|---|---|---|---|---|
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 335,364 | 14.50 USD | 4,862,778 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 4,331,081 | 0.00 USD | 4,331 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 7,000 | 21.40 USD | 149,800 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 7,000 | 24.29 USD | 170,030 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 12,500 | 24.16 USD | 302,000 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 25,000 | 2.64 USD | 66,000 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | RA CAPITAL MANAGEMENT, L.P. | director, 10 percent owner: | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | LAPORTE KATHLEEN | director | 0 | D-Return | D | 25,000 | 18.68 USD | 467,000 USD |
| Thursday, October 30th, 2025 | LAPORTE KATHLEEN | director | 0 | D-Return | D | 12,500 | 2.64 USD | 33,000 USD |
| Thursday, October 30th, 2025 | LAPORTE KATHLEEN | director | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | LAPORTE KATHLEEN | director | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | LAPORTE KATHLEEN | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | U-Tender | D | 61,538 | 14.50 USD | 892,301 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 2,933 | 1.93 USD | 5,661 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 22,730 | 3.11 USD | 70,690 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 7,000 | 21.40 USD | 149,800 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 7,000 | 24.29 USD | 170,030 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 12,500 | 24.16 USD | 302,000 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 25,000 | 2.64 USD | 66,000 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | Hayden Michael R | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 374,295 | A-Award | A | 35,000 | 0.00 USD | 0 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | U-Tender | D | 374,295 | 14.50 USD | 5,427,278 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | D-Return | D | 47,500 | 32.50 USD | 1,543,750 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | D-Return | D | 57,500 | 23.01 USD | 1,323,075 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | D-Return | D | 48,102 | 4.44 USD | 213,573 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | D-Return | D | 110,000 | 14.70 USD | 1,617,000 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | D-Return | D | 175,000 | 9.98 USD | 1,746,500 USD |
| Thursday, October 30th, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | D-Return | D | 300,000 | 9.60 USD | 2,880,000 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 40,000 | 23.22 USD | 928,800 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 7,000 | 24.29 USD | 170,030 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 12,500 | 24.16 USD | 302,000 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 25,000 | 2.64 USD | 66,000 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | Altschuler Steven | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 934,273 | A-Award | A | 125,000 | 0.00 USD | 0 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | U-Tender | D | 934,273 | 14.50 USD | 13,546,959 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 120,231 | 1.93 USD | 232,046 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 132,242 | 3.11 USD | 411,273 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 170,000 | 32.50 USD | 5,525,000 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 203,750 | 23.01 USD | 4,688,288 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 220,000 | 4.44 USD | 976,800 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 300,000 | 14.70 USD | 4,410,000 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 605,000 | 9.98 USD | 6,037,900 USD |
| Thursday, October 30th, 2025 | PALEKAR ROHAN | director, officer: Chief Executive Officer | 0 | D-Return | D | 848,000 | 9.60 USD | 8,140,800 USD |
| Thursday, October 30th, 2025 | McWherter Charles | director | 0 | U-Tender | D | 25,000 | 14.50 USD | 362,500 USD |
| Thursday, October 30th, 2025 | McWherter Charles | director | 0 | D-Return | D | 67,700 | 8.39 USD | 568,003 USD |
| Thursday, October 30th, 2025 | McWherter Charles | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Atkinson Edward Morrow III | director | 0 | D-Return | D | 20,000 | 4.44 USD | 88,800 USD |
| Thursday, October 30th, 2025 | Atkinson Edward Morrow III | director | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | Atkinson Edward Morrow III | director | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | Atkinson Edward Morrow III | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Zoth Lota S. | director | 0 | D-Return | D | 20,000 | 24.05 USD | 481,000 USD |
| Thursday, October 30th, 2025 | Zoth Lota S. | director | 0 | D-Return | D | 12,500 | 24.16 USD | 302,000 USD |
| Thursday, October 30th, 2025 | Zoth Lota S. | director | 0 | D-Return | D | 25,000 | 2.64 USD | 66,000 USD |
| Thursday, October 30th, 2025 | Zoth Lota S. | director | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | Zoth Lota S. | director | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | Zoth Lota S. | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 351,684 | A-Award | A | 50,000 | 0.00 USD | 0 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | U-Tender | D | 13,694 | 14.50 USD | 198,563 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 3,312 | 3.11 USD | 10,300 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 50,000 | 32.50 USD | 1,625,000 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 67,500 | 23.01 USD | 1,553,175 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 70,000 | 4.44 USD | 310,800 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 120,000 | 14.70 USD | 1,764,000 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 195,000 | 9.98 USD | 1,946,100 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 17,500 | 9.60 USD | 168,000 USD |
| Thursday, October 30th, 2025 | Le-Nguyen Quoc | officer: See Remarks | 0 | D-Return | D | 26,400 | 10.58 USD | 279,312 USD |
| Thursday, October 30th, 2025 | Babler Martin | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Babler Martin | director | 0 | D-Return | D | 67,700 | 8.86 USD | 599,822 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 7,000 | 21.40 USD | 149,800 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 7,000 | 24.29 USD | 170,030 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 12,500 | 24.16 USD | 302,000 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 25,000 | 2.64 USD | 66,000 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 27,400 | 14.70 USD | 402,780 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 45,150 | 9.98 USD | 450,597 USD |
| Thursday, October 30th, 2025 | DiRocco Derek | director | 0 | D-Return | D | 56,400 | 9.60 USD | 541,440 USD |
| Thursday, October 30th, 2025 | Sarena Francis Willard | officer: Chief Operating Officer | 0 | U-Tender | D | 75,310 | 14.50 USD | 1,091,995 USD |
| Thursday, October 30th, 2025 | Sarena Francis Willard | officer: Chief Operating Officer | 0 | D-Return | D | 350,000 | 8.39 USD | 2,936,500 USD |
| Thursday, October 30th, 2025 | Sarena Francis Willard | officer: Chief Operating Officer | 0 | D-Return | D | 215,000 | 9.60 USD | 2,064,000 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 352,656 | A-Award | A | 50,000 | 0.00 USD | 0 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 98,204 | 1.93 USD | 189,534 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | U-Tender | D | 352,656 | 14.50 USD | 5,113,512 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 39,037 | 3.11 USD | 121,405 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 45,000 | 32.50 USD | 1,462,500 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 67,500 | 23.01 USD | 1,553,175 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 70,000 | 4.44 USD | 310,800 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 120,000 | 14.70 USD | 1,764,000 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 195,000 | 9.98 USD | 1,946,100 USD |
| Thursday, October 30th, 2025 | Mansbach Harry H | officer: Chief Medical Officer | 0 | D-Return | D | 320,000 | 9.60 USD | 3,072,000 USD |
| Wednesday, October 22nd, 2025 | Martins Ryan | officer: Chief Financial Officer | 339,295 | M-Exempt | A | 3,898 | 4.44 USD | 17,307 USD |
| Wednesday, October 22nd, 2025 | Martins Ryan | officer: Chief Financial Officer | 335,397 | M-Exempt | A | 76,901 | 3.11 USD | 239,162 USD |
| Wednesday, October 22nd, 2025 | Martins Ryan | officer: Chief Financial Officer | 48,102 | M-Exempt | D | 3,898 | 4.44 USD | 17,307 USD |
| Wednesday, October 22nd, 2025 | Martins Ryan | officer: Chief Financial Officer | 0 | M-Exempt | D | 76,901 | 3.11 USD | 239,162 USD |
| Friday, August 1st, 2025 | Le-Nguyen Quoc | officer: See Remarks | 301,684 | F-InKind | D | 7,680 | 9.16 USD | 70,349 USD |
| Friday, August 1st, 2025 | Le-Nguyen Quoc | officer: See Remarks | 13,694 | F-InKind | D | 522 | 9.16 USD | 4,782 USD |
