Abiopharma

🔍 Shaff Eric D. (Executive)

Company: Seres Therapeutics, Inc. (MCRB)

Report Date: 2026-08-15

Detailed Transactions and Holdings:

• Acquired 722 shares of Common Stock (Direct)
  Date: 2026-08-15 | Code: M | equity_swap_involved: false | shares_owned_after: 12,762.00 | transaction_form_type: 4 | Footnotes: F1
• Sold 263 shares of Common Stock at $4.55 per share (Direct)
  Date: 2026-08-17 | Code: S | equity_swap_involved: false | shares_owned_after: 12,499.00 | transaction_form_type: 4 | Footnotes: F2
• Sold 390 shares of Restricted Stock Units (Derivative)
  Date: 2026-08-15 | Code: M | equity_swap_involved: false | shares_owned_after: 783.00 | transaction_form_type: 4 | Footnotes: F1, F3, F3
• Sold 332 shares of Restricted Stock Units (Derivative)
  Date: 2026-08-15 | Code: M | equity_swap_involved: false | shares_owned_after: 1,993.00 | transaction_form_type: 4 | Footnotes: F1, F4, F4

Footnotes:

• F1: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
• F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 instruction adopted by the reporting person on March 2, 2023, solely with the intent to cover taxes in connection with the vesting of the restricted stock units.
• F3: The restricted stock units vested and settled as to 25% of the restricted stock units on February 15, 2024. The remainder of the restricted stock units have vested and settled or will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.
• F4: The restricted stock units vested and settled as to 25% of the restricted stock units on February 15, 2025. The remainder of the restricted stock units have vested and settled or will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.