Macrogenics Inc (MGNX): insider trading, Congress trades & who owns it

Insider signal
23/100
Heavy insider selling · 90 days
Insider buys
$0
0 buyers · 12 months
Insider sales
$129K
1 seller · 12 months
Funds holding
122
13F · Q2 2026
Congress trades
None
none in 2 years

Macrogenics Inc the people running the company have only been selling lately: one insider sold about $129,000 of stock over 12 months, with no open-market purchases.

Selling on its own is common and often pre-planned (10b5-1 plans, taxes, diversification), so it matters more when it is unusually heavy or broad.

122 investment managers listed MGNX in their latest 13F filings (Q2 2026); more funds bought than sold. Looking at the quarterly pattern: Last full quarter: net selling by insiders. Insiders bought in 1 of the last 7 full quarters.

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Latest insider trades in MGNX

FiledInsiderRoleTypeSharesPriceValueSource
Aug 20, 2026Peters Jeffrey StuartOfficerSell31,105$4.15$129KSEC
Aug 21, 2025HEIDEN WILLIAM KDirectorBuy49,500$1.49$74KSEC
Aug 21, 2025HEIDEN WILLIAM KDirectorBuy50,500$1.52$77KSEC
Feb 19, 2025Smith Beth AnnOfficerSell423$2.56$1KSEC
Apr 8, 2024Peters Jeffrey StuartExecutive OfficerSell5,351$17.74$95KSEC
Apr 8, 2024Peters Jeffrey StuartExecutive OfficerSell42,500$15.07$640KSEC
Apr 8, 2024Peters Jeffrey StuartExecutive OfficerSell147$15.51$2KSEC
Apr 8, 2024Peters Jeffrey StuartExecutive OfficerSell232$16.38$4KSEC
Apr 8, 2024Peters Jeffrey StuartExecutive OfficerSell3,165$18.22$58KSEC
Mar 8, 2024Peters Jeffrey StuartExecutive OfficerSell19,625$21.50$422KSEC
Mar 6, 2024Risser Eric BlasiusCOOSell15,000$20.00$300KSEC
Mar 6, 2024Risser Eric BlasiusCOOSell26,159$19.63$514KSEC
Mar 6, 2024Spitznagel ThomasOfficerSell10,000$20.00$200KSEC
Mar 6, 2024Karrels JamesCFOSell30,000$20.50$615KSEC
Feb 28, 2024Peters Jeffrey StuartExecutive OfficerSell16,124$17.22$278KSEC

Questions about MGNX

Are insiders buying or selling MGNX stock?

In the last 12 months Macrogenics Inc insiders made open-market purchases worth about $0 and sales worth about $129,000. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.

When was the last insider trade in MGNX?

The most recent open-market insider trade in MGNX was filed on 2026-08-20.

How many institutions own MGNX?

122 investment managers reported holding MGNX in SEC Form 13F filings for Q2 2026.

Has any member of Congress traded MGNX?

No congressional trades in MGNX were reported in the past two years. The full list is free on CapitalSnitch.

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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).