Panacea Innovation Ltd bought ATRA

November 28, 2025 · Form 4 insider transaction

Panacea Innovation Ltd bought 48,737 shares of Atara Biotherapeutics, Inc. at $0.00 per share, a transaction worth $4.87. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 3 days after the transaction.

Direction
Acquired (buy-side)
Shares
48,737
Price
$0.00
Total value
$4.87
Role10% owner
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateNovember 28, 2025
Filing dateDecember 1, 2025
Shares owned after48,737
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

Represents securities held by Panacea Opportunity Fund I, L.P.; James Huang is the sole owner of Panacea Innovation Limited, which is the sole owner of Panacea Venture Healthcare Fund II GP Company, Ltd. ("Fund II GP") and Panacea Opportunity Fund I GP Company, Ltd. ("Opportunity Fund GP"), which are the general partners of Panacea Venture Healthcare Fund II, L.P. and Panacea Opportunity Fund I, L.P. As a result, each of the Reporting Persons may be deemed to share beneficial ownership of the securities held of record by Panacea Venture Healthcare Fund II, L.P. and Panacea Opportunity Fund I, L.P., but each disclaims such beneficial ownership.

View the original Form 4 on SEC EDGAR