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89bio, Inc. 4 SEC Filings

Filed On Filing
03 Nov 2025 Form 4: Ra Capital MANAGEMENT, L.p., Director and 4 others

Returned 19,889,683 shares to the issuer · Disposed of 4,331,081 Pre-Funded Warrants (Right to Buy) (Disposition to Issuer) · Disposed of 180,450 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Laporte Kathleen, Director

Disposed of 166,450 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Hayden Michael R, Director

Disposed of 246,420 shares (Tender Offer) · Disposed of 233,760 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Martins Ryan, Chief Financial Officer

Received 35,000 shares as a grant or award · Disposed of 374,295 shares (Tender Offer) · Disposed of 738,102 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Altschuler Steven, Director

Disposed of 213,450 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Palekar Rohan, Director

Received 125,000 shares as a grant or award · Disposed of 934,273 shares (Tender Offer) · Disposed of 2,599,223 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: McWherter Charles, Director

Disposed of 25,000 shares (Tender Offer) · Disposed of 124,100 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Atkinson Edward Morrow Iii, Director

Disposed of 148,950 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Zoth Lota S., Director

Disposed of 186,450 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Le-Nguyen Quoc, See Remarks

Received 50,000 shares as a grant or award · Disposed of 365,378 shares (Tender Offer) · Disposed of 873,775 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Babler Martin, Director

Disposed of 124,100 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: DiRocco Derek, Director

Disposed of 180,450 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Sarena Francis Willard, Chief Operating Officer

Disposed of 75,310 shares (Tender Offer) · Disposed of 565,000 Stock Option (Right to Buy) (Disposition to Issuer)

30 Oct 2025 Form 4: Mansbach Harry H, Chief Medical Officer

Received 50,000 shares as a grant or award · Disposed of 352,656 shares (Tender Offer) · Disposed of 954,741 Stock Option (Right to Buy) (Disposition to Issuer)

23 Oct 2025 Form 4: Martins Ryan, Chief Financial Officer

Received 80,799 shares by exercise or conversion ($256K)

05 Aug 2025 Form 4: Le-Nguyen Quoc, See Remarks

Gave up 8,202 shares to cover exercise price or tax ($75.1K)

05 Aug 2025 Form 4: Mansbach Harry H, Chief Medical Officer

Gave up 7,680 shares to cover exercise price or tax ($70.3K)

05 Aug 2025 Form 4: Martins Ryan, Chief Financial Officer

Gave up 7,680 shares to cover exercise price or tax ($70.3K)

05 Aug 2025 Form 4: Sarena Francis Willard, Chief Operating Officer

Gave up 3,206 shares to cover exercise price or tax ($29.4K) · Gave up 2,979 shares to cover exercise price or tax ($28.9K)

05 Aug 2025 Form 4: Palekar Rohan, Director

Gave up 55,836 shares to cover exercise price or tax ($511K)

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