AMAM Insider Trading

Notice: This stock is marked as potentially delisted. It may not be actively trading.
Insider Ownership Percentage: 0.64%
Insider Buying (Last 12 Months): $28,763,117.06
Insider Selling (Last 12 Months): $616,597.80

Ambrx Biopharma Insider Trading History Chart

This chart shows the insider buying and selling history at Ambrx Biopharma by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Ambrx Biopharma Share Price & Price History

Current Price: $28.00
Price Change: +0.30 (1.20%)
As of 03/7/2024 01:00 AM ET

This chart shows the closing price history over time for AMAM up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table

Ambrx Biopharma Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
10/27/2023Daniel J O'connorCEOSell50,012$9.82$491,117.84342,845View SEC Filing Icon  
10/27/2023Sonja NelsonCFOSell12,778$9.82$125,479.96130,079View SEC Filing Icon  
10/23/2023Cormorant Asset Management, LpMajor ShareholderBuy1,307,311$6.99$9,138,103.8911,231,000View SEC Filing Icon  
9/18/2023Cormorant Asset Management, LpMajor ShareholderBuy751,233$9.24$6,941,392.9269,465,823View SEC Filing Icon  
9/15/2023Cormorant Asset Management, LpMajor ShareholderBuy1,401,505$9.05$12,683,620.2568,714,590View SEC Filing Icon  
4/19/2023Cormorant Asset Management, LpMajor ShareholderBuy135,850$11.15$1,514,727.509,485,714View SEC Filing Icon  
4/17/2023Cormorant Asset Management, LpMajor ShareholderBuy562,121$10.67$5,997,831.0762,097,896View SEC Filing Icon  
4/13/2023Cormorant Asset Management, LpMajor ShareholderBuy1,193,808$9.16$10,935,281.2860,693,808View SEC Filing Icon  
3/16/2023Cormorant Asset Management, LpMajor ShareholderBuy500,000$10.15$5,075,000.0053,500,000View SEC Filing Icon  
3/14/2023Cormorant Asset Management, LpMajor ShareholderBuy250,000$9.95$2,487,500.0052,750,000View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Ambrx Biopharma (NYSE:AMAM)

77.28% of Ambrx Biopharma stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at AMAM by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Ambrx Biopharma Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/26/2024Virtu Financial LLC20,386$0.29M0.0%N/A0.032%Search for SEC Filing on Google Icon
2/26/2024Perceptive Advisors LLC78,811$1.12M0.0%N/A0.125%Search for SEC Filing on Google Icon
2/22/2024Sierra Summit Advisors LLC37,237$0.53M0.2%N/A0.059%Search for SEC Filing on Google Icon
2/15/2024Old Well Partners LLC14,400$0.21M0.2%N/A0.023%Search for SEC Filing on Google Icon
2/15/2024Parkman Healthcare Partners LLC87,678$1.25M0.2%-41.5%0.139%Search for SEC Filing on Google Icon
2/14/2024Altitude Crest Partners Inc.43,100$0.61M0.4%N/A0.068%Search for SEC Filing on Google Icon
2/14/2024Lighthouse Investment Partners LLC88,925$1.27M0.1%N/A0.141%Search for SEC Filing on Google Icon
2/13/2024Tower Research Capital LLC TRC5,614$80K0.0%+2,288.9%0.009%Search for SEC Filing on Google Icon
2/12/2024Monashee Investment Management LLC207,500$2.96M0.5%+196.4%0.329%Search for SEC Filing on Google Icon
2/12/2024TD Asset Management Inc140,256$2M0.0%+27.0%0.222%Search for SEC Filing on Google Icon
2/6/2024WuXi AppTec Co. Ltd.1,000,000$14.24M36.9%N/A1.584%Search for SEC Filing on Google Icon
1/31/2024Federated Hermes Inc.330,949$4.71M0.0%-86.2%0.524%Search for SEC Filing on Google Icon
1/30/2024HealthInvest Partners AB57,847$0.82M0.7%N/A0.092%Search for SEC Filing on Google Icon
1/24/2024China Universal Asset Management Co. Ltd.7,303$0.10M0.0%N/A0.012%Search for SEC Filing on Google Icon
11/15/2023Alps Advisors Inc.45,531$0.52M0.0%+12.2%0.073%Search for SEC Filing on Google Icon
11/14/2023Monashee Investment Management LLC70,000$0.81M0.3%N/A0.113%Search for SEC Filing on Google Icon
11/13/2023Federated Hermes Inc.2,395,867$27.55M0.1%N/A3.864%Search for SEC Filing on Google Icon
11/13/2023NWI Management LP160,935$1.85M0.1%N/A0.260%Search for SEC Filing on Google Icon
11/13/2023FMR LLC1,761,058$20.25M0.0%-20.3%2.840%Search for SEC Filing on Google Icon
11/9/2023Innovis Asset Management LLC31,137$0.36M0.1%+85.1%0.050%Search for SEC Filing on Google Icon
10/27/2023TD Asset Management Inc110,456$1.27M0.0%+73.3%0.178%Search for SEC Filing on Google Icon
10/24/2023Bank of New York Mellon Corp47,433$0.55M0.0%N/A0.076%Search for SEC Filing on Google Icon
8/15/2023Silverarc Capital Management LLC100,000$1.65M0.5%N/A0.162%Search for SEC Filing on Google Icon
8/15/2023HighVista Strategies LLC153,431$2.53M1.2%N/A0.248%Search for SEC Filing on Google Icon
8/15/2023Commodore Capital LP3,175,000$52.26M5.9%-33.9%5.142%Search for SEC Filing on Google Icon
8/14/2023Cormorant Asset Management LP9,616,155$158.28M8.9%+13.1%15.573%Search for SEC Filing on Google Icon
8/11/2023VR Adviser LLC2,484,960$40.90M6.5%-24.7%4.499%Search for SEC Filing on Google Icon
8/11/2023ExodusPoint Capital Management LP477,558$7.86M0.1%+2,349.4%0.865%Search for SEC Filing on Google Icon
8/9/2023TD Asset Management Inc63,728$1.05M0.0%+358.5%0.115%Search for SEC Filing on Google Icon
8/3/2023Innovis Asset Management LLC16,826$0.28M0.1%N/A0.030%Search for SEC Filing on Google Icon
7/20/2023Exchange Traded Concepts LLC9,830$0.16M0.0%N/A0.018%Search for SEC Filing on Google Icon
7/13/2023QP Wealth Management LLC12,670$0.21M0.3%N/A0.023%Search for SEC Filing on Google Icon
5/15/2023Commodore Capital LP4,803,447$42.85M6.5%N/A12.433%Search for SEC Filing on Google Icon
5/15/2023Ghost Tree Capital LLC250,000$2.23M0.7%N/A0.647%Search for SEC Filing on Google Icon
5/15/2023Farallon Capital Management LLC361,000$3.22M0.0%N/A0.934%Search for SEC Filing on Google Icon
5/10/2023Tocqueville Asset Management L.P.12,500$0.11M0.0%N/A0.032%Search for SEC Filing on Google Icon
5/9/2023Tower Research Capital LLC TRC20,440$0.18M0.0%+681,233.3%0.053%Search for SEC Filing on Google Icon
4/28/2023Fosun International Ltd249,190$2.22M0.2%-87.1%0.645%Search for SEC Filing on Google Icon
3/15/2023B. Riley Wealth Advisors Inc.20,000$45K0.0%N/A0.052%Search for SEC Filing on Google Icon
2/14/2023Alpine Global Management LLC46,723$0.11M0.0%N/A0.121%Search for SEC Filing on Google Icon
11/14/2022Cormorant Asset Management LP2,336,389$2.52M0.2%-6.0%6.050%Search for SEC Filing on Google Icon
5/16/2022Suvretta Capital Management LLC1,491,832$6.15M0.2%+41.0%3.866%Search for SEC Filing on Google Icon
2/15/2022Adage Capital Partners GP L.L.C.1,923,700$17.37M0.0%+5.3%5.107%Search for SEC Filing on Google Icon
2/14/2022Suvretta Capital Management LLC1,057,735$9.55M0.2%N/A2.808%Search for SEC Filing on Google Icon
11/15/2021Tudor Investment Corp Et Al20,143$0.27M0.0%-66.4%0.053%Search for SEC Filing on Google Icon
11/12/2021Ghisallo Capital Management LLC15,000$0.20M0.0%-62.5%0.040%Search for SEC Filing on Google Icon
11/9/2021BlackRock Inc.820,221$11.07M0.0%-3.6%2.177%Search for SEC Filing on Google Icon
8/25/2021Marshall Wace North America L.P.32,648$0.64M0.0%N/A0.087%Search for SEC Filing on Google Icon
8/17/2021Millennium Management LLC144,092$2.82M0.0%N/A0.383%Search for SEC Filing on Google Icon
8/17/2021Octagon Capital Advisors LP450,000$8.82M1.8%N/A1.195%Search for SEC Filing on Google Icon
8/17/2021Boothbay Fund Management LLC13,422$0.26M0.0%N/A0.036%Search for SEC Filing on Google Icon
8/17/2021Caas Capital Management LP40,000$0.78M0.0%N/A0.106%Search for SEC Filing on Google Icon
8/16/2021Tudor Investment Corp Et Al60,000$1.18M0.0%N/A0.159%Search for SEC Filing on Google Icon
8/13/2021FMR LLC3,766,940$68.73M0.0%N/A10.000%Search for SEC Filing on Google Icon
8/12/2021Fosun International Ltd1,932,591$37.88M2.2%N/A5.130%Search for SEC Filing on Google Icon
8/12/2021Monashee Investment Management LLC110,000$2.16M0.3%N/A0.292%Search for SEC Filing on Google Icon
8/11/2021BlackRock Inc.850,676$16.67M0.0%N/A2.258%Search for SEC Filing on Google Icon
7/30/2021Alliancebernstein L.P.70,000$1.37M0.0%N/A0.186%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Ambrx Biopharma logo
Ambrx Biopharma Inc., a clinical stage biopharmaceutical company, focuses on discovering and developing antibody drug conjugates (ADCs) and other engineered therapies to modulate the immune system. It focuses on portfolio of clinical and preclinical programs designed to optimize efficacy and safety in multiple cancer indications, including ARX517, its proprietary antibody-drug conjugate (ADC) targeting the prostate-specific membrane antigen (PSMA) and ARX788, its proprietary ADC targeting HER2. The company also has preclinical and clinical collaborations with multiple partners on drug candidates using Ambrx technology. The company was incorporated in 2003 and is headquartered in La Jolla, California.
Read More on Ambrx Biopharma

Today's Range

Now: $28.00
Low: $28.00
High: $28.00

50 Day Range

MA: $27.94
Low: $27.70
High: $28.00

52 Week Range

Now: $28.00
Low: $6.55
High: $28.15

Volume

N/A

Average Volume

2,123,967 shs

Market Capitalization

$1.77 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

N/A

Who are the company insiders with the largest holdings of Ambrx Biopharma?

Ambrx Biopharma's top insider investors include:
  1. Cormorant Asset Management, Lp (Major Shareholder)
  2. Daniel J O'connor (CEO)
  3. Sonja Nelson (CFO)
Learn More about top insider investors at Ambrx Biopharma.