Shaff Eric D.

CIK 00016437342 companiesCAMBRIDGE, MA

SEC Profile

Transactions

Companies

Filings

CIK

0001643734

Recent Transactions

50 trades

Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2026-02-15−391→ 1,564 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2026-02-15$8.47/sh−259→ 11,577 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2026-02-15+723→ 11,836 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2026-02-15−333→ 2,656 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-11-15$17.30/sh−217→ 11,113 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-11-15+331→ 11,330 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-11-15−331→ 2,989 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-11-15+390→ 10,999 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-11-15−390→ 1,954 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-08-18$16.65/sh−217→ 10,609 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-08-15+391→ 10,493 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-08-15−333→ 3,320 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-08-15−391→ 2,344 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-08-15+333→ 10,826 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-05-16$7.28/sh−220→ 10,102 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-05-15−390→ 2,735 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-05-15+331→ 10,322 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-05-15−331→ 3,653 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-05-15+390→ 9,991 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-02-18$0.81/sh−12,726→ 192,039 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-02-15−26,563→ 79,687 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-02-15+7,813→ 178,202 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2025-02-15+26,563→ 204,765 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2025-02-15−7,813→ 62,500 total
Award
Seres Therapeutics, Inc.$MCRB
Stock Option (Right to Buy)
2025-02-07+1,950,000→ 1,950,000 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-11-18$0.54/sh−2,505→ 170,389 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2024-11-15−7,812→ 70,313 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-11-15+7,812→ 172,894 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-10-28$0.69/sh−8,748→ 165,082 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2024-10-27−27,837→ 0 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-10-27+27,837→ 173,830 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-08-16$0.84/sh−2,518→ 145,993 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2024-08-15−7,813→ 78,125 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-08-15+7,813→ 148,511 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-05-15+7,812→ 143,133 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2024-05-15−7,812→ 85,938 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-05-15$0.94/sh−2,435→ 140,698 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-02-16$1.08/sh−11,549→ 135,321 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2024-02-15+31,250→ 146,870 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2024-02-15−31,250→ 93,750 total
Award
Seres Therapeutics, Inc.$MCRB
Stock Option (Right to Buy)
2024-02-14+637,500→ 637,500 total
Award
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2024-02-14+106,250→ 106,250 total
Award
Seres Therapeutics, Inc.$MCRB
Stock Option (Right to Buy)
2024-02-14+822,580→ 822,580 total
Sale
Seres Therapeutics, Inc.$MCRB
Common Stock
2023-10-30$1.35/sh−8,552→ 115,620 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Common Stock
2023-10-27+27,838→ 124,172 total
Exercise/Conversion
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2023-10-27−27,838→ 27,837 total
Disposition to Issuer
Sigilon Therapeutics, Inc.
Stock Option (Right to Buy)
2023-08-11$6.64/sh−683→ 0 total
Disposition to Issuer
Sigilon Therapeutics, Inc.
Stock Option (Right to Buy)
2023-08-11$5.00/sh−683→ 0 total
Award
Sigilon Therapeutics, Inc.
Stock Option (Right to Buy)
2023-05-19+8,888→ 8,888 total
Award
Seres Therapeutics, Inc.$MCRB
Restricted Stock Units
2023-04-27+55,675→ 55,675 total

Companies

Recent Filings

Address

C/O SERES THERAPEUTICS, INC. 101 CAMBRIDGE PARK DRIVE

CAMBRIDGE, MA, 02140

View on SEC.gov