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89BIO INC (ETNB) Stock Ownership and Short Interest

USA - NASDAQ:ETNB - US2825591033 - Common Stock

14.84 USD
+0.01 (+0.07%)
Last: 10/28/2025, 8:00:01 PM
14.84 USD
0 (0%)
Pre-Market: 10/29/2025, 6:37:16 AM
ETNB Ownership Chart.ETNB Ownership Chart: showing Insider, Institutional ownership and shares available to the public.ETNB Ownership.InsiderInstitutional



Shares Outstanding148.49M
Float147.65M
Float Short Interest Percentage4.58%
Owners (insider)0.55%
Owners (institutional)110.73%
Owners (insider) change-2.07%
Owners (institutional) change-1.18%
ETNB Institutional Ownership HistoryETNB Institutional Ownership HistoryETNB Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 50M 100M 150M
ETNB Historical Insider Transactions ChartETNB Historical Insider Buy and Sell Transactions ChartETNB Historical Insider Transactions Nov 2024 Dec 2024 Jan 2025 Feb 2025 Mar 2025 Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 0 5M 10M 15M 20M 25M
Date Name Type Shares Price Amount
Oct 22, 2025 Martins Ryan Option Excercise 80799 3.17 $ 256,469.23
Aug 1, 2025 Le-Nguyen Quoc Option Excercise 8202 9.16 $ 75,130.32
Aug 1, 2025 Mansbach Harry H Option Excercise 7680 9.16 $ 70,348.80
Aug 1, 2025 Martins Ryan Option Excercise 7680 9.16 $ 70,348.80
Aug 1, 2025 Sarena Francis Willard Option Excercise 6185 9.42 $ 58,233.47
Aug 1, 2025 PALEKAR ROHAN Option Excercise 55836 9.16 $ 511,457.76
Jul 15, 2025 Le-Nguyen Quoc Open Market Sale 10461 11.02 $ 115,280.22
Jun 12, 2025 Martins Ryan Option Excercise 8498 9.62 $ 81,750.76
Jun 12, 2025 Mansbach Harry H Option Excercise 8498 9.62 $ 81,750.76
Jun 12, 2025 Le-Nguyen Quoc Option Excercise 9032 9.62 $ 86,887.84
Apr 15, 2025 Le-Nguyen Quoc Open Market Sale 15329 5.95 $ 91,207.55
Feb 17, 2025 Le-Nguyen Quoc Option Excercise 1050 10.57 $ 11,098.50
Feb 17, 2025 PALEKAR ROHAN Option Excercise 3249 10.57 $ 34,341.93
Feb 17, 2025 Martins Ryan Option Excercise 780 10.57 $ 8,244.60
Feb 17, 2025 Mansbach Harry H Option Excercise 1050 10.57 $ 11,098.50
Feb 9, 2025 PALEKAR ROHAN Option Excercise 8946 11.41 $ 102,073.86
Feb 9, 2025 Martins Ryan Option Excercise 3828 11.41 $ 43,677.48
Feb 9, 2025 Le-Nguyen Quoc Option Excercise 3793 11.41 $ 43,278.13
Feb 9, 2025 Mansbach Harry H Option Excercise 3817 11.41 $ 43,551.97
Feb 1, 2025 Martins Ryan Grant 80000 0.00 $ 0.00
Feb 1, 2025 Martins Ryan Option Excercise 3338 9.60 $ 32,044.80
Feb 1, 2025 Le-Nguyen Quoc Grant 80000 0.00 $ 0.00
Feb 1, 2025 Le-Nguyen Quoc Option Excercise 3338 9.60 $ 32,044.80
Feb 1, 2025 PALEKAR ROHAN Grant 412000 0.00 $ 0.00
Feb 1, 2025 PALEKAR ROHAN Option Excercise 9598 9.60 $ 92,140.80
Feb 1, 2025 Mansbach Harry H Grant 80000 0.00 $ 0.00
Feb 1, 2025 Mansbach Harry H Option Excercise 3338 9.60 $ 32,044.80
Feb 1, 2025 Sarena Francis Willard Grant 53750 0.00 $ 0.00
Jan 30, 2025 RA CAPITAL MANAGEMENT, LLC Open Market Purchase 5714285 8.75 $ 49,999,993.75
Jan 30, 2025 RA Capital Healthcare Fund LP Open Market Purchase 5714285 8.75 $ 49,999,993.75
Jan 30, 2025 RA Capital Nexus Fund, L.P. Open Market Purchase 5714285 8.75 $ 49,999,993.75
Jan 30, 2025 Kolchinsky Peter Open Market Purchase 5714285 8.75 $ 49,999,993.75
Jan 30, 2025 Shah Rajeev M. Open Market Purchase 5714285 8.75 $ 49,999,993.75
Jan 21, 2025 McWherter Charles Open Market Purchase 15000 6.66 $ 99,850.00
Jan 15, 2025 Le-Nguyen Quoc Open Market Sale 10963 6.49 $ 71,149.87
Dec 12, 2024 Mansbach Harry H Grant 95000 0.00 $ 0.00
Dec 12, 2024 Le-Nguyen Quoc Grant 95000 0.00 $ 0.00
Dec 12, 2024 Martins Ryan Grant 95000 0.00 $ 0.00
Dec 6, 2024 PALEKAR ROHAN Open Market Purchase 5000 7.89 $ 39,450.00
Dec 5, 2024 McWherter Charles Open Market Purchase 10000 8.00 $ 80,000.00
Nov 22, 2024 PALEKAR ROHAN Open Market Purchase 10000 8.35 $ 83,500.00
Oct 30, 2024 Le-Nguyen Quoc Open Market Sale 27955 8.12 $ 226,994.60