Ambrx Biopharma Inc. (AMAM) is a publicly traded company in the Unknown sector. Across all available filings, 11 corporate insiders have executed 27 transactions totaling $123.9M, demonstrating a bullish sentiment with $122.6M in net insider flow. The most recent transaction on Mar 7, 2024 involved a transaction of 22,936 shares valued at $0.
No significant insider buying has been recorded for AMAM in the recent period.
No significant insider selling has been recorded for AMAM in the recent period.
Based on recent SEC filings, insider sentiment for AMAM is bullish with an Insider Alignment Score of 100/100 and a net flow of $122.6M. Insiders are accumulating shares, which historically signals confidence in the company's future performance.
Insider trading at Ambrx Biopharma Inc. (AMAM) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 11 insiders are actively trading AMAM stock, having executed 27 transactions in the past 90 days. The most active insider is Bihua Chen (Executive), who has made 3 transactions totaling $59.0M.
Get notified when executives and directors at AMAM file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Mar 7, 2024 | Nelson Sonja | Executive | Disposition | 22,936 | $N/A | $0 | |
| Mar 7, 2024 | J. O'connor Daniel | Executive | Disposition | 48,202 | $N/A | $0 | |
| Dec 11, 2023 | J. O'connor Daniel | Executive | Award | 750,000 | $N/A | $0 | |
| Dec 11, 2023 | Nelson Sonja | Executive | Award | 50,000 | $N/A | $0 | |
| Dec 11, 2023 | Aromando Andrew | Executive | Award | 100,000 | $N/A | $0 | |
| Oct 27, 2023 | Nelson Sonja | Executive | Sale | 12,778 | $9.82 | $125.5K | 10b5-1 |
| Oct 27, 2023 | J. O'connor Daniel | Executive | Sale | 50,012 | $9.82 | $491.1K | 10b5-1 |
| Oct 23, 2023 | Management, Lp Cormorant Asset | Executive | Purchase | 1,307,311 | $6.99 | $9.1M | Large |
| Sep 18, 2023 | Management, Lp Cormorant Asset | Executive | Purchase | 751,233 | $9.24 | $6.9M | Large |
| Sep 15, 2023 | Management, Lp Cormorant Asset | Executive | Purchase | 1,401,505 | $9.05 | $12.7M | Large |
| Sep 1, 2023 | Dalesandro Margaret | Executive | Award | 125,000 | $N/A | $0 | |
| Sep 1, 2023 | Dalesandro Margaret | Executive | Award | 70,833 | $N/A | $0 | |
| Jun 7, 2023 | Hermans Kate | Executive | Award | 85,000 | $N/A | $0 | |
| Jun 7, 2023 | Maier Paul V | Executive | Award | 85,000 | $N/A | $0 | |
| Jun 7, 2023 | Loesberg Janet | Executive | Award | 85,000 | $N/A | $0 |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Purchase(P) | 12 | $123.2M | 99.5% |
Sale(S) | 2 | $616.6K | 0.5% |
Disposition(D) | 2 | $0 | 0.0% |
Award(A) | 11 | $0 | 0.0% |
Insiders at Ambrx Biopharma Inc. are accumulating shares at an accelerated pace. With 11 insiders making 27 transactions totaling $123.2M in purchases versus $616.6K in sales, the net buying activity of $122.6M signals strong executive confidence. Bihua Chen (Executive) leads the buying activity with $59.0M in transactions across all time.