GRAYZEL DAVID S.

CIK 00017327863 companiesWALTHAM, MA

SEC Profile

Transactions

Companies

Filings

CIK

0001732786

Recent Transactions

36 trades

Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-10-23+53,521→ 53,521 total
Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-02-24+18,595→ 18,595 total
Disposition to Issuer
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-02-24−18,595→ 0 total
Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-02-24+2,569→ 2,569 total
Disposition to Issuer
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-02-24−12,767→ 0 total
Disposition to Issuer
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-02-24−2,569→ 0 total
Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-02-24+12,767→ 12,767 total
Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2025-01-15+18,595→ 18,595 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2024-06-05+12,500→ 12,500 total
Sale
Jade Biosciences, Inc.$JBIO
Common Stock
2024-04-09$28.15/sh−11,882→ 14,502 total
Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2024-04-01$13.42/sh+2,569→ 2,569 total
Award
Q32 Bio Inc.$QTTB
Stock Option (Right to Buy)
2024-03-25+12,767→ 12,767 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2024-01-02$13.49/sh+3,186→ 3,186 total
Disposition to Issuer
Surface Oncology, Inc.
Common Stock
2023-09-08−2,945,453→ 0 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2023-06-06+12,500→ 12,500 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2023-01-03$18.08/sh+2,654→ 2,654 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2022-06-21+12,500→ 12,500 total
Award
Surface Oncology, Inc.
Stock Option (Right to Buy)
2022-06-08+24,000→ 24,000 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2022-01-03$6.56/sh+7,317→ 7,317 total
Purchase
Jade Biosciences, Inc.$JBIO
Common Stock
2021-07-02$14.00/sh+535,714→ 3,103,879 total
Conversion
Jade Biosciences, Inc.$JBIO
Series A Preferred Stock
2021-07-02−7,976,754→ 0 total
Conversion
Jade Biosciences, Inc.$JBIO
Common Stock
2021-07-02+2,568,165→ 2,568,165 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2021-07-01$11.15/sh+2,153→ 2,153 total
Award
Jade Biosciences, Inc.$JBIO
Stock Option (Right to Buy)
2021-06-29+25,000→ 25,000 total
Award
Surface Oncology, Inc.
Stock Option (Right to Buy)
2021-06-08+17,700→ 17,700 total
Award
Jade Biosciences, Inc.$JBIO
Series A Preferred Stock
2021-06-04$1.89/sh+6,102,052→ 7,976,754 total
Award
Jade Biosciences, Inc.$JBIO
Series A Preferred Stock
2021-02-01$1.89/sh+878,981→ 1,874,702 total
Sale
Surface Oncology, Inc.
Common Stock
2020-12-17$18.10/sh−1,700,000→ 2,945,453 total
Sale
Surface Oncology, Inc.
Common Stock
2020-12-17$8.10/sh−1,700,000→ 2,945,453 total
Award
Surface Oncology, Inc.
Stock Option (Right to Buy)
2020-06-10+12,000→ 12,000 total
Award
Surface Oncology, Inc.
Stock Option (Right to Buy)
2019-10-01+14,965→ 14,965 total
Award
Surface Oncology, Inc.
Stock Option (Right to Buy)
2019-07-01+6,280→ 6,280 total
Award
Surface Oncology, Inc.
Stock Option (Right to Buy)
2019-06-05+12,100→ 12,100 total
Conversion
Surface Oncology, Inc.
Common Stock
2018-04-23+3,181,817→ 4,545,453 total
Purchase
Surface Oncology, Inc.
Common Stock
2018-04-23$15.00/sh+100,000→ 4,645,453 total
Conversion
Surface Oncology, Inc.
Series A Preferred Stock
2018-04-23−7,000,000→ 0 total

Companies

Recent Filings

Address

Q32 BIO INC. 830 WINTER STREET

WALTHAM, MA, 02451

View on SEC.gov