David S. Grayzel

Director, Surface Oncology, Inc.

Companies

Q32 Bio Inc.Board member Mar 27, 2024 to now¹
Jade Biosciences, Inc.Board member Jun 29, 2021 to Jun 7, 2024²
Surface Oncology, Inc.Board member Apr 18, 2018 to Sep 8, 2023³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

Jade Biosciences, Inc. JBIO1,784,730 shares⁴$24.2M at $13.56Apr 11, 2024
Q32 Bio Inc. QTTB724,549 shares⁵$5.7M at $7.81Mar 27, 2024
Surface Oncology, Inc.0 shares⁶Sep 8, 2023

As of each latest filing. The line shows shares held over time.

Recent filings

Apr 9, 2024Sold 11,882 shares at $28.15 of Jade Biosciences, Inc.⁴
Sep 8, 2023Returned to company 2,945,453 shares of Surface Oncology, Inc.⁶

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARQ32 Bio Inc., Board member
2
SEC EDGARJade Biosciences, Inc., Board member
3
SEC EDGARSurface Oncology, Inc., Board member
4
SEC EDGARJade Biosciences, Inc. shares after the filing of Apr 11, 2024
5
SEC EDGARQ32 Bio Inc. shares after the filing of Mar 27, 2024
6
SEC EDGARSurface Oncology, Inc. shares after the filing of Sep 8, 2023