Latest Insider Transactions at 89bio, Inc. (ETNB)
This section provides a real-time view of insider transactions for 89bio, Inc. (ETNB). The data is sourced from Form 4 filings with the SEC, which are filed by insiders of 89bio, Inc. to disclose their transactions in the company's securities. By reviewing this information, investors can gain insights into the trading activity of 89bio, Inc.'s insiders and make more informed investment decisions.
Insider Transaction List
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Oct 30
2025
|
Ra Capital Management, L.P. |
SELL
Sale (or disposition) back to the issuer
|
Indirect |
19,889,683
-100.0%
|
-
|
|
Oct 30
2025
|
Michael R Hayden |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Indirect |
165,516
-100.0%
|
-
|
|
Oct 30
2025
|
Michael R Hayden |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
80,904
-100.0%
|
-
|
|
Oct 30
2025
|
Ryan Martins Chief Financial Officer |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
374,295
-100.0%
|
-
|
|
Oct 30
2025
|
Ryan Martins Chief Financial Officer |
BUY
Grant, award, or other acquisition
|
Direct |
35,000
+8.55%
|
-
|
|
Oct 30
2025
|
Charles Mc Wherter |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
25,000
-100.0%
|
-
|
|
Oct 30
2025
|
Rohan Palekar Chief Executive Officer |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
934,273
-100.0%
|
-
|
|
Oct 30
2025
|
Rohan Palekar Chief Executive Officer |
BUY
Grant, award, or other acquisition
|
Direct |
125,000
+11.8%
|
-
|
|
Oct 30
2025
|
Quoc Le Nguyen |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Indirect |
13,694
-100.0%
|
-
|
|
Oct 30
2025
|
Quoc Le Nguyen |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
351,684
-100.0%
|
-
|
|
Oct 30
2025
|
Quoc Le Nguyen |
BUY
Grant, award, or other acquisition
|
Direct |
50,000
+12.45%
|
-
|
|
Oct 30
2025
|
Harry H Mansbach Chief Medical Officer |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
352,656
-100.0%
|
-
|
|
Oct 30
2025
|
Harry H Mansbach Chief Medical Officer |
BUY
Grant, award, or other acquisition
|
Direct |
50,000
+12.42%
|
-
|
|
Oct 30
2025
|
Francis Willard Sarena Chief Operating Officer |
SELL
Disposition due to a tender of shares in a change of control transaction
|
Direct |
75,310
-100.0%
|
-
|
|
Oct 22
2025
|
Ryan Martins Chief Financial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
80,799
+9.89%
|
$242,397
$3.78 P/Share
|
|
Aug 05
2025
|
Francis Willard Sarena Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
2,979
-3.86%
|
$26,811
$9.69 P/Share
|
|
Aug 01
2025
|
Francis Willard Sarena Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,206
-3.99%
|
$28,854
$9.16 P/Share
|
|
Aug 01
2025
|
Ryan Martins Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
7,680
-2.94%
|
$69,120
$9.16 P/Share
|
|
Aug 01
2025
|
Harry H Mansbach Chief Medical Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
7,680
-2.47%
|
$69,120
$9.16 P/Share
|
|
Aug 01
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Indirect |
522
-3.67%
|
$4,698
$9.16 P/Share
|
|
Aug 01
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Direct |
7,680
-2.48%
|
$69,120
$9.16 P/Share
|
|
Aug 01
2025
|
Rohan Palekar Chief Executive Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
55,836
-6.46%
|
$502,524
$9.16 P/Share
|
|
Jul 15
2025
|
Quoc Le Nguyen |
SELL
Open market or private sale
|
Direct |
10,461
-3.27%
|
$115,071
$11.02 P/Share
|
|
Jun 12
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Indirect |
534
-3.62%
|
$4,806
$9.62 P/Share
|
|
Jun 12
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Direct |
8,498
-2.59%
|
$76,482
$9.62 P/Share
|
|
Jun 12
2025
|
Harry H Mansbach Chief Medical Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
8,498
-2.67%
|
$76,482
$9.62 P/Share
|
|
Jun 12
2025
|
Ryan Martins Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
8,498
-3.15%
|
$76,482
$9.62 P/Share
|
|
Apr 15
2025
|
Quoc Le Nguyen |
SELL
Open market or private sale
|
Direct |
15,329
-4.46%
|
$76,645
$5.95 P/Share
|
|
Feb 17
2025
|
Harry H Mansbach Chief Medical Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
1,050
-0.33%
|
$10,500
$10.57 P/Share
|
|
Feb 17
2025
|
Ryan Martins Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
780
-0.29%
|
$7,800
$10.57 P/Share
|
|
Feb 17
2025
|
Rohan Palekar Chief Executive Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,249
-0.38%
|
$32,490
$10.57 P/Share
|
|
Feb 17
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Direct |
1,050
-0.3%
|
$10,500
$10.57 P/Share
|
|
Feb 09
2025
|
Harry H Mansbach Chief Medical Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,817
-1.18%
|
$41,987
$11.41 P/Share
|
|
Feb 09
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Direct |
3,793
-1.09%
|
$41,723
$11.41 P/Share
|
|
Feb 09
2025
|
Ryan Martins Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,828
-1.4%
|
$42,108
$11.41 P/Share
|
|
Feb 09
2025
|
Rohan Palekar Chief Executive Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
8,946
-1.02%
|
$98,406
$11.41 P/Share
|
|
Feb 01
2025
|
Quoc Le Nguyen |
BUY
Grant, award, or other acquisition
|
Indirect |
8,750
+37.23%
|
$78,750
$9.6 P/Share
|
|
Feb 01
2025
|
Quoc Le Nguyen |
SELL
Payment of exercise price or tax liability
|
Direct |
3,338
-0.95%
|
$30,042
$9.6 P/Share
|
|
Feb 01
2025
|
Quoc Le Nguyen |
BUY
Grant, award, or other acquisition
|
Direct |
80,000
+18.53%
|
-
|
|
Feb 01
2025
|
Ryan Martins Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,338
-1.2%
|
$30,042
$9.6 P/Share
|
|
Feb 01
2025
|
Ryan Martins Chief Financial Officer |
BUY
Grant, award, or other acquisition
|
Direct |
80,000
+22.37%
|
-
|
|
Feb 01
2025
|
Harry H Mansbach Chief Medical Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,338
-1.02%
|
$30,042
$9.6 P/Share
|
|
Feb 01
2025
|
Harry H Mansbach Chief Medical Officer |
BUY
Grant, award, or other acquisition
|
Direct |
80,000
+19.65%
|
-
|
|
Feb 01
2025
|
Rohan Palekar Chief Executive Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
9,598
-1.09%
|
$86,382
$9.6 P/Share
|
|
Feb 01
2025
|
Rohan Palekar Chief Executive Officer |
BUY
Grant, award, or other acquisition
|
Direct |
412,000
+21.07%
|
-
|
|
Feb 01
2025
|
Francis Willard Sarena Chief Operating Officer |
BUY
Grant, award, or other acquisition
|
Direct |
53,750
+40.57%
|
-
|
|
Jan 30
2025
|
Ra Capital Management, L.P. |
BUY
Open market or private purchase
|
Indirect |
5,714,285
+22.61%
|
$45,714,280
$8.75 P/Share
|
|
Jan 22
2025
|
Charles Mc Wherter |
BUY
Open market or private purchase
|
Direct |
10,000
+28.57%
|
$60,000
$6.71 P/Share
|
|
Jan 21
2025
|
Charles Mc Wherter |
BUY
Open market or private purchase
|
Direct |
5,000
+25.0%
|
$30,000
$6.55 P/Share
|
|
Jan 15
2025
|
Quoc Le Nguyen |
SELL
Open market or private sale
|
Direct |
10,963
-3.88%
|
$65,778
$6.49 P/Share
|