Gregory Austin Ciongoli
Director, Atara Biotherapeutics, Inc.
Companies
- Gossamer Bio, Inc.Board member Sep 22, 2026 to now1
- REGENXBIO Inc.Board member Aug 27, 2026 to now2
- ZymeworksBoard member Aug 12, 2025 to now3
- Atara Biotherapeutics, Inc.Board member Sep 5, 2024 to now4
Holdings
Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.
Shares held
- Atara Biotherapeutics, Inc. ATRA1,221,395 shares5$11.3M at $9.24Jun 11, 2026
- REGENXBIO Inc. RGNX118,035 shares6$851.6K at $7.21Aug 27, 2026
As of each latest filing. The line shows shares held over time.
Recent filings
- Aug 27, 2026Bought 53,407 shares at $9.36 of REGENXBIO Inc.6
- Aug 26, 2026Bought 49,196 shares at $9.14 of REGENXBIO Inc.6
- Aug 25, 2026Granted 15,432 shares of REGENXBIO Inc.6
- Jun 9, 2026Granted 12,000 shares of Atara Biotherapeutics, Inc.5
- Aug 12, 2025Granted 415,000 shares at $12.02 of CIK 19376537
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1SEC EDGARGossamer Bio, Inc., Board member
- 2SEC EDGARREGENXBIO Inc., Board member
- 3SEC EDGARZymeworks, Board member
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- 7SEC EDGARForm 4 filed Aug 12, 2025