There have been 50 recent insider transactions recorded for 89bio, Inc. (ETNB), including 24 buys and 25 sells. Total insider buying was valued at $61.98M and total insider selling at $1.07M.
Notable insiders with recent activity include Mansbach Harry H, Martins Ryan, Le-nguyen Quoc. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — ETNB
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2025-06-12 |
Mansbach Harry H |
Chief Medical Officer |
Tax Withholding of RSU |
8,498 |
$9.62 |
$81.75K |
310,336 |
| 2025-06-12 |
Martins Ryan |
Chief Financial Officer |
Tax Withholding of RSU |
8,498 |
$9.62 |
$81.75K |
261,176 |
| 2025-06-12 |
Le-nguyen Quoc |
See Remarks |
Tax Withholding of RSU |
534 |
$9.62 |
$5.14K |
14,216 |
| 2025-04-15 |
Le-nguyen Quoc |
See Remarks |
Informative Sell |
15,329 |
$5.95 |
$91.21K |
328,323 |
| 2025-02-17 |
Mansbach Harry H |
Chief Medical Officer |
Tax Withholding of RSU |
1,050 |
$10.57 |
$11.1K |
318,834 |
| 2025-02-17 |
Palekar Rohan |
Chief Executive Officer |
Tax Withholding of RSU |
3,249 |
$10.57 |
$34.34K |
862,240 |
| 2025-02-17 |
Martins Ryan |
Chief Financial Officer |
Tax Withholding of RSU |
780 |
$10.57 |
$8.24K |
269,674 |
| 2025-02-17 |
Le-nguyen Quoc |
See Remarks |
Tax Withholding of RSU |
1,050 |
$10.57 |
$11.1K |
343,652 |
| 2025-02-09 |
Mansbach Harry H |
Chief Medical Officer |
Tax Withholding of RSU |
3,817 |
$11.41 |
$43.55K |
319,884 |
| 2025-02-09 |
Palekar Rohan |
Chief Executive Officer |
Tax Withholding of RSU |
8,946 |
$11.41 |
$102.07K |
864,692 |
| 2025-02-09 |
Martins Ryan |
Chief Financial Officer |
Tax Withholding of RSU |
3,828 |
$11.41 |
$43.68K |
270,454 |
| 2025-02-09 |
Le-nguyen Quoc |
See Remarks |
Tax Withholding of RSU |
3,793 |
$11.41 |
$43.28K |
344,702 |
| 2025-02-03 |
Laporte Kathleen |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Zoth Lota S. |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Ra Capital Management, L.p. |
10 Percent Owner |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Hayden Michael R |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Babler Martin |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Altschuler Steven |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Mcwherter Charles |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Dirocco Derek |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-03 |
Atkinson Edward Morrow Iii |
Director |
RSU Award |
56,400 |
$9.60 |
$541.44K |
56,400 |
| 2025-02-01 |
Mansbach Harry H |
Chief Medical Officer |
RSU Award |
320,000 |
$9.60 |
$3.07M |
320,000 |
| 2025-02-01 |
Palekar Rohan |
Chief Executive Officer |
RSU Award |
212,000 |
- |
- |
683,236 |
| 2025-02-01 |
Sarena Francis Willard |
Chief Operating Officer |
RSU Award |
53,750 |
- |
- |
78,750 |
| 2025-02-01 |
Martins Ryan |
Chief Financial Officer |
Tax Withholding of RSU |
3,338 |
$9.60 |
$32.04K |
274,282 |
| 2025-02-01 |
Le-nguyen Quoc |
See Remarks |
RSU Award |
320,000 |
$9.60 |
$3.07M |
320,000 |
| 2025-02-01 |
Le-nguyen Quoc |
See Remarks |
RSU Award |
8,750 |
$9.60 |
$84K |
14,750 |
| 2025-01-30 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Buy |
5,714,285 |
$8.75 |
$50M |
19,554,319 |
| 2025-01-22 |
Mcwherter Charles |
Director |
Informative Buy |
10,000 |
$6.71 |
$67.1K |
25,000 |
| 2025-01-21 |
Mcwherter Charles |
Director |
Informative Buy |
5,000 |
$6.55 |
$32.75K |
15,000 |
| 2025-01-15 |
Le-nguyen Quoc |
See Remarks |
Informative Sell |
10,963 |
$6.49 |
$71.15K |
271,833 |
| 2024-12-12 |
Le-nguyen Quoc |
See Remarks |
RSU Award |
6,000 |
- |
- |
6,000 |
| 2024-12-12 |
Mansbach Harry H |
Chief Medical Officer |
RSU Award (Return) |
95,000 |
- |
- |
247,039 |
| 2024-12-12 |
Martins Ryan |
Chief Financial Officer |
RSU Award (Return) |
95,000 |
- |
- |
197,620 |
| 2024-12-12 |
Le-nguyen Quoc |
See Remarks |
RSU Award (Return) |
95,000 |
- |
- |
282,796 |
| 2024-12-06 |
Palekar Rohan |
Chief Executive Officer |
Informative Buy |
5,000 |
$7.89 |
$39.45K |
471,236 |
| 2024-12-05 |
Mcwherter Charles |
Director |
Informative Buy |
10,000 |
$8.00 |
$80K |
10,000 |
| 2024-11-22 |
Palekar Rohan |
Chief Executive Officer |
Informative Buy |
10,000 |
$8.35 |
$83.5K |
466,236 |
| 2024-11-14 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Buy |
3,250,000 |
$0.00 |
$3.25K |
4,331,081 |
| 2024-10-30 |
Le-nguyen Quoc |
See Remarks |
Informative Sell |
27,955 |
$8.12 |
$226.99K |
187,796 |
| 2024-09-09 |
Mansbach Harry H |
Chief Medical Officer |
Tax Withholding of RSU |
5,352 |
$8.46 |
$45.28K |
152,039 |
| 2024-09-09 |
Martins Ryan |
Chief Financial Officer |
Tax Withholding of RSU |
3,212 |
$8.46 |
$27.17K |
102,620 |
| 2024-09-09 |
Le-nguyen Quoc |
See Remarks |
Tax Withholding of RSU |
5,352 |
$8.46 |
$45.28K |
215,751 |
| 2024-08-17 |
Mansbach Harry H |
Chief Medical Officer |
Tax Withholding of RSU |
1,046 |
$8.04 |
$8.41K |
157,391 |
| 2024-08-17 |
Palekar Rohan |
Chief Executive Officer |
Tax Withholding of RSU |
4,601 |
$8.04 |
$36.99K |
456,236 |
| 2024-08-17 |
Martins Ryan |
Chief Financial Officer |
Tax Withholding of RSU |
777 |
$8.04 |
$6.25K |
105,832 |
| 2024-08-17 |
Le-nguyen Quoc |
See Remarks |
Tax Withholding of RSU |
1,046 |
$8.04 |
$8.41K |
221,103 |
| 2024-08-05 |
Sarena Francis Willard |
Chief Operating Officer |
RSU Award |
25,000 |
- |
- |
25,000 |
| 2024-08-05 |
Mcwherter Charles |
Director |
RSU Award |
67,700 |
$8.39 |
$568K |
67,700 |
| 2024-07-30 |
Sarena Francis Willard |
Officer |
Unknown |
- |
- |
- |
- |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
