Ambrx Biopharma, Inc.
Total Trades
7
Buys
5
Sells
2
Largest Trade
$1M+
Insiders
3
Institutional Funds
1
Inst. Value
$500K+
Activist Filings
20
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Nelson Sonja | CFO | SELL | $100K–$500K | 13K | $9.82 | Oct 31, 2023 |
| O'Connor Daniel J. | President and CEO | SELL | $100K–$500K | 50K | $9.82 | Oct 31, 2023 |
| Cormorant Asset Management, LP | 10% Owner | BUY | $1M+ | 1.3M | $6.99 | Oct 25, 2023 |
| Cormorant Asset Management, LP | 10% Owner | BUY | $1M+ | 2.2M | $9.12 | Sep 19, 2023 |
| Cormorant Asset Management, LP | 10% Owner | BUY | $1M+ | 5.2M | $11.30 | Apr 20, 2023 |
| Cormorant Asset Management, LP | 10% Owner | BUY | $1M+ | 2.6M | $9.75 | Apr 17, 2023 |
| Cormorant Asset Management, LP | 10% Owner | BUY | $1M+ | 1.0M | $10.21 | Mar 16, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2021 · 1 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| NORGES BANK | 70K | $500K+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 9, 2024
0.0%
0 shares
SC 13G · Oct 10, 2023
8.9%
39.0M shares
Darwin Global Management, Ltd.
SC 13D/A · Jun 28, 2023
27.5%
116.8M shares
Darwin Global Management, Ltd.
SC 13D/A · May 25, 2023
20.5%
79.1M shares
SC 13G/A · Apr 27, 2023
8.1%
31.2M shares
Cormorant Global Healthcare Master Fund, LP
SC 13G/A · Mar 13, 2023
14.4%
42.8M shares
Darwin Global Management, Ltd.
SC 13D · Mar 8, 2023
26.4%
79.1M shares
SC 13G/A · Mar 3, 2023
13.2%
35.7M shares
SC 13G · Mar 3, 2023
9.7%
26.3M shares
Venrock Healthcare Capital Partners III, L.P.
SC 13G · Feb 27, 2023
9.9%
26.7M shares
HBM Healthcare Investments (Cayman) Ltd.
SC 13G/A · Feb 14, 2023
3.1%
8.4M shares
Cormorant Global Healthcare Master Fund, LP
SC 13G/A · Feb 14, 2023
2.4%
6.5M shares
Darwin Global Management, Ltd.
SC 13G/A · Feb 14, 2023
19.6%
53.1M shares
SC 13G/A · Feb 11, 2023
5.6%
15.1M shares
Darwin Global Management, Ltd.
SC 13G · Dec 19, 2022
18.7%
50.6M shares
SC 13G/A · Mar 10, 2022
10.7%
26.8M shares
Cormorant Global Healthcare Master Fund, LP
SC 13G/A · Feb 14, 2022
3.1%
7.5M shares
HBM Healthcare Investments (Cayman) Ltd.
SC 13G/A · Feb 11, 2022
6.9%
16.9M shares
SC 13G · Jan 18, 2022
5.8%
14.2M shares