Insider Transactions Reported by 16 Insiders of Ambrx Biopharma Cayman, Inc.

Location
La Jolla, CA

There are no Buy or Sell transactions made by insiders since 13 Mar 2025

Ambrx Biopharma Cayman, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Cormorant Asset Management, LP 10%+ Owner $642,190,694 15 Sep 2023
HOPU Reunion Co Ltd 10%+ Owner $360,103,335 01 Jan 2023
Commodore Capital LP 10%+ Owner $330,035,790 23 Feb 2023
Darwin Global Management, Ltd. 10%+ Owner $305,952,424 27 Jun 2023
WuXi AppTec Co., Ltd. 10%+ Owner $270,570,986 01 Jan 2023
Edward Hu Director $11,236,674 01 Jan 2023
Paul Maier V Director $785,800 07 Jun 2023
Stephen C. Glover Director $785,800 18 May 2023
Kate Hermans Director $785,800 07 Jun 2023
Janet Loesberg Director $785,800 07 Jun 2023
Margaret Dalesandro Director $654,830 01 Sep 2023
Xiaowei Chang Director 07 Jun 2023
Andrew Aromando Chief Operating Officer 05 Jul 2023
Sonja Nelson Chief Financial Officer 05 Jul 2023
Katrin Rupalla Director 27 Jan 2023
Daniel J. O'Connor President and CEO, Director 05 Jul 2023

Recent Insider Transactions by Companies or Individuals for Ambrx Biopharma Cayman, Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Cormorant Asset Management, LP Ordinary Shares Purchase 1.09% $6,944,924 $9.24 751,233 69,465,823 18 Sep 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 2.08% $12,680,677 $9.05 1,401,505 68,714,590 15 Sep 2023 See Footnotes
Margaret Dalesandro Ordinary Shares Award 195,833 125,000 01 Sep 2023 Direct
Andrew Aromando Stock Option (right to buy) Award 389,000 389,000 05 Jul 2023 Direct
Sonja Nelson Stock Option (right to buy) Award 389,000 389,000 05 Jul 2023 Direct
Daniel J. O'Connor Stock Option (right to buy) Award 1,216,500 1,216,500 05 Jul 2023 Direct
Darwin Global Management, Ltd. American Depository Shares ("ADSs") Purchase 47.6% 5,384,063 16,688,636 27 Jun 2023 See footnotes
Janet Loesberg Ordinary Shares Award 85,000 85,000 07 Jun 2023 Direct
Xiaowei Chang Cash-Settled RSU's Award -71.2% -210,000 85,000 07 Jun 2023 Direct
Kate Hermans Ordinary Shares Award 85,000 85,000 07 Jun 2023 Direct
Stephen C. Glover Ordinary Shares Award 85,000 85,000 07 Jun 2023 Direct
Stephen C. Glover Stock Option (right to buy) Award 40,000 40,000 07 Jun 2023 Direct
Paul Maier V Ordinary Shares Award 85,000 85,000 07 Jun 2023 Direct
Stephen C. Glover Stock Option (right to buy) Award 17,500 17,500 18 May 2023 Direct
Stephen C. Glover Stock Option (right to buy) Award 210,000 210,000 18 May 2023 Direct
Andrew Aromando Stock Option (right to buy) Award 2,600,000 2,600,000 28 Apr 2023 Direct
Sonja Nelson Ordinary Shares Award 1,000,000 1,000,000 26 Apr 2023 Direct
Daniel J. O'Connor Ordinary Shares Award 2,750,000 2,750,000 26 Apr 2023 Direct
Cormorant Asset Management, LP Ordinary Shares Purchase 1.33% $10,285,220 $11.60 886,634 67,313,085 20 Apr 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 1.45% $10,612,357 $11.15 951,909 66,426,451 19 Apr 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 5.44% $38,053,112 $11.27 3,376,646 65,474,542 18 Apr 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 0.91% $5,999,461 $10.67 562,121 62,097,896 17 Apr 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 1.39% $8,384,307 $9.96 841,967 61,535,775 14 Apr 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 2.01% $10,935,520 $9.16 1,193,808 60,693,808 13 Apr 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 0.94% $5,074,250 $10.15 500,000 53,500,000 16 Mar 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 0.47% $2,648,875 $10.60 250,000 53,000,000 15 Mar 2023 See Footnotes
Cormorant Asset Management, LP Ordinary Shares Purchase 0.48% $2,488,275 $9.95 250,000 52,750,000 14 Mar 2023 See Footnotes
Darwin Global Management, Ltd. ADSs Purchase 47% 3,615,000 11,304,573 06 Mar 2023 See footnotes
Darwin Global Management, Ltd. ADSs Purchase 0.52% 39,957 7,689,573 28 Feb 2023 See footnotes
Darwin Global Management, Ltd. American Depository Shares ("ADSs") Purchase 0.86% 65,127 7,649,616 27 Feb 2023 See footnotes
Katrin Rupalla Stock Option (right to buy) Disposed to Issuer -100% -305,000 0 27 Jan 2023 Direct
Katrin Rupalla Stock Option (right to buy) Award 305,000 200,000 27 Jan 2023 Direct
Janet Loesberg Stock Option (right to buy) Award 315,000 210,000 27 Jan 2023 Direct
Janet Loesberg Stock Option (right to buy) Disposed to Issuer -100% -315,000 0 27 Jan 2023 Direct
Kate Hermans Stock Option (right to buy) Disposed to Issuer -100% -525,000 0 27 Jan 2023 Direct
Kate Hermans Stock Option (right to buy) Award 525,000 210,000 27 Jan 2023 Direct
Sonja Nelson Employee Stock Option (right to buy) Disposed to Issuer -100% -3,849,596 0 27 Jan 2023 Direct
Sonja Nelson Employee Stock Option (right to buy) Award 3,849,596 2,574,596 27 Jan 2023 Direct
Paul Maier V Stock Option (right to buy) Disposed to Issuer -100% -315,000 0 27 Jan 2023 Direct
Paul Maier V Stock Option (right to buy) Award 315,000 210,000 27 Jan 2023 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.