Insider Transactions Reported by 17 Insiders of 89bio, Inc.

Location
San Francisco, CA

Insiders trading volume in the past year

89bio, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
RA CAPITAL MANAGEMENT, L.P. Director, 10%+ Owner $36,809,857 30 Oct 2025
ORBIMED ADVISORS LLC 10%+ Owner $21,093,397 25 Jan 2022
Ram Waisbourd Chief Operating Officer and Chief Business Officer $100,888 17 Feb 2022
Charles McWherter Director $0 30 Oct 2025
Quoc Le-Nguyen Chief Technical Operations Officer $0 -$206,488 -100% 30 Oct 2025
Michael R. Hayden Director $0 30 Oct 2025
Francis Willard Sarena Chief Operating Officer $0 30 Oct 2025
Harry H. Mansbach Chief Medical Officer $0 30 Oct 2025
Rohan Palekar Chief Executive Officer, Director $0 30 Oct 2025
Ryan Martins Chief Financial Officer $0 30 Oct 2025
Gregory Grunberg Director, 10%+ Owner 09 Feb 2023
Derek DiRocco Director 30 Oct 2025
Lota S. Zoth Director 30 Oct 2025
Martin Babler Director 30 Oct 2025
Kathleen Laporte Director 30 Oct 2025
Edward Morrow Atkinson III Director 30 Oct 2025
Steven M. Altschuler Director 30 Oct 2025

Recent Insider Transactions by Companies or Individuals for 89bio, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Ra Capital Management, L.P. ETNB Common Stock Disposed to Issuer -100% -19,889,683 0 30 Oct 2025 See Footnotes
Ra Capital Management, L.P. ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -180,450 0 30 Oct 2025 See footnotes
Ra Capital Management, L.P. ETNB Pre-Funded Warrants (Right to Buy) Disposed to Issuer -100% -4,331,081 0 30 Oct 2025 See footnotes
Kathleen LaPorte ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -166,450 0 30 Oct 2025 Direct
Michael R. Hayden ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -165,516 0 30 Oct 2025 See footnote
Michael R. Hayden ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -80,904 0 30 Oct 2025 Direct
Michael R. Hayden ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -233,760 0 30 Oct 2025 Direct
Ryan Martins ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -374,295 0 30 Oct 2025 Direct
Ryan Martins ETNB Common Stock Award 10.3% 35,000 374,295 30 Oct 2025 Direct
Ryan Martins ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -738,102 0 30 Oct 2025 Direct
Steven M. Altschuler ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -213,450 0 30 Oct 2025 Direct
Rohan Palekar ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -934,273 0 30 Oct 2025 Direct
Rohan Palekar ETNB Common Stock Award 15.4% 125,000 934,273 30 Oct 2025 Direct
Rohan Palekar ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -2,599,223 0 30 Oct 2025 Direct
Charles McWherter ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -25,000 0 30 Oct 2025 Direct
Charles McWherter ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -124,100 0 30 Oct 2025 Direct
Edward Morrow Atkinson III ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -148,950 0 30 Oct 2025 Direct
Lota S. Zoth ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -186,450 0 30 Oct 2025 Direct
Quoc Le-Nguyen ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -13,694 0 30 Oct 2025 By Spouse
Quoc Le-Nguyen ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -351,684 0 30 Oct 2025 Direct
Quoc Le-Nguyen ETNB Common Stock Award 16.6% 50,000 351,684 30 Oct 2025 Direct
Quoc Le-Nguyen ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -43,900 0 30 Oct 2025 By Spouse
Quoc Le-Nguyen ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -829,875 0 30 Oct 2025 Direct
Martin Babler ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -124,100 0 30 Oct 2025 Direct
Derek DiRocco ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -19,500 0 30 Oct 2025 See footnote
Derek DiRocco ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -160,950 0 30 Oct 2025 Direct
Francis Willard Sarena ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -75,310 0 30 Oct 2025 Direct
Francis Willard Sarena ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -565,000 0 30 Oct 2025 Direct
Harry H. Mansbach ETNB Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -352,656 0 30 Oct 2025 Direct
Harry H. Mansbach ETNB Common Stock Award 16.5% 50,000 352,656 30 Oct 2025 Direct
Harry H. Mansbach ETNB Stock Option (Right to Buy) Disposed to Issuer -100% -954,741 0 30 Oct 2025 Direct
Ryan Martins ETNB Common Stock Options Exercise 31.3% 80,799 339,295 22 Oct 2025 Direct
Ryan Martins ETNB Stock Option (Right to Buy) Options Exercise -100% -80,799 0 22 Oct 2025 Direct
Francis Willard Sarena ETNB Common Stock Tax liability -3.86% -2,979 74,231 05 Aug 2025 Direct
Quoc Le-Nguyen ETNB Common Stock Tax liability -3.67% -522 13,694 01 Aug 2025 By Spouse
Quoc Le-Nguyen ETNB Common Stock Tax liability -2.48% -7,680 301,684 01 Aug 2025 Direct
Harry H. Mansbach ETNB Common Stock Tax liability -2.47% -7,680 302,656 01 Aug 2025 Direct
Ryan Martins ETNB Common Stock Tax liability -2.94% -7,680 253,496 01 Aug 2025 Direct
Francis Willard Sarena ETNB Common Stock Tax liability -3.99% -3,206 77,210 01 Aug 2025 Direct
Rohan Palekar ETNB Common Stock Tax liability -6.46% -55,836 808,070 01 Aug 2025 Direct
Quoc Le-Nguyen ETNB Common Stock Sale -3.27% $115,280 $11.02 -10,461 309,364 15 Jul 2025 Direct
Ryan Martins ETNB Common Stock Tax liability -3.15% -8,498 261,176 12 Jun 2025 Direct
Harry H. Mansbach ETNB Common Stock Tax liability -2.67% -8,498 310,336 12 Jun 2025 Direct
Quoc Le-Nguyen ETNB Common Stock Tax liability -3.62% -534 14,216 12 Jun 2025 By Spouse
Quoc Le-Nguyen ETNB Common Stock Tax liability -2.59% -8,498 319,825 12 Jun 2025 Direct
Quoc Le-Nguyen ETNB Common Stock Sale -4.46% $91,208 $5.95 -15,329 328,323 15 Apr 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.