Over the past 12 months, 1 insider at MACROGENICS INC filed 2 open-market SEC Form 4 transactions on MGNX: 2 purchases worth $151K and 0 sales worth $0. Insiders have been net buyers over this period. The most recent filing was on Aug 20, 25.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 20, 25 | William K HeidenDirector | BUY | 49.5K | $1.49 | $74K |
| Aug 19, 25 | William K HeidenDirector | BUY | 50.5K | $1.52 | $77K |
| Feb 15, 25 | Beth Ann SmithVP, Controller & Treasurer | SELL | 423 | $2.56 | $1K |
| Apr 4, 24 | Jeffrey Stuart PetersSenior VP and General Counsel | SELL | 42.5K | $18.22 | $640K |
| Mar 6, 24 | Jeffrey Stuart PetersSenior VP and General Counsel | SELL | 19.6K | $21.50 | $422K |
| Mar 4, 24 | James KarrelsSVP, CFO and Secretary | SELL | 30.0K | $20.50 | $615K |
| Mar 4, 24 | Eric Blasius RisserChief Operating Officer | SELL | 26.2K | $20.00 | $514K |
| Mar 4, 24 | Thomas SpitznagelSr VP, Technical Ops | SELL | 10.0K | $20.00 | $200K |
| Feb 26, 24 | Jeffrey Stuart PetersSenior VP and General Counsel | SELL | 16.1K | $17.22 | $278K |
| Feb 7, 24 | Ezio BonviniSr VP, Research & CSO | SELL | 3.3K | $18.00 | $60K |
| Feb 5, 24 | Jeffrey Stuart PetersSenior VP and General Counsel | SELL | 54.4K | $16.50 | $897K |
| Feb 1, 24 | Ezio BonviniSr VP, Research & CSO | SELL | 13.3K | $15.00 | $200K |
| Jan 19, 24 | Ezio BonviniSr VP, Research & CSO | SELL | 13.3K | $12.00 | $160K |
| Dec 20, 23 | Ezio BonviniSr VP, Research & CSO | SELL | 18.9K | $10.08 | $190K |
| Oct 2, 23 | Bb Biotech AgTenPercentOwner | BUY | 150.0K | $4.46 | $669K |
| Sep 7, 23 | Target N Biotech VTenPercentOwner | BUY | 200.0K | $5.26 | $1.1M |
| Aug 30, 23 | Edward HurwitzDirector | BUY | 15.0K | $4.91 | $74K |
| Mar 10, 23 | Jeffrey Stuart PetersSenior VP and General Counsel | SELL | 5.4K | $6.03 | $32K |
| Feb 14, 23 | Bb Biotech AgTenPercentOwner | BUY | 500.0K | $5.07 | $2.5M |
| Jan 19, 23 | Target N Biotech VTenPercentOwner | BUY | 150.0K | $5.30 | $795K |
| Dec 27, 22 | Bb Biotech AgTenPercentOwner | BUY | 200.0K | $5.61 | $1.1M |
| Dec 23, 22 | Bb Biotech AgTenPercentOwner | BUY | 200.0K | $5.88 | $1.2M |
| Nov 22, 22 | Target N Biotech VTenPercentOwner | BUY | 300.0K | $5.96 | $1.8M |
| Oct 24, 22 | Bb Biotech AgTenPercentOwner | BUY | 250.0K | $4.36 | $1.1M |
| Oct 21, 22 | Bb Biotech AgTenPercentOwner | BUY | 250.0K | $4.63 | $1.2M |
| Oct 20, 22 | Bb Biotech AgTenPercentOwner | BUY | 286.0K | $4.00 | $1.1M |
| Oct 19, 22 | Bb Biotech AgTenPercentOwner | BUY | 168.4K | $3.70 | $623K |
| Jun 15, 22 | James KarrelsSVP, CFO and Secretary | BUY | 40.0K | $2.47 | $99K |
| Nov 19, 21 | Target N Biotech VTenPercentOwner | BUY | 200.0K | $18.50 | $3.7M |
| Sep 29, 21 | Bb Biotech AgTenPercentOwner | BUY | 100.0K | $20.47 | $2.0M |
| Sep 28, 21 | Bb Biotech AgTenPercentOwner | BUY | 100.0K | $20.64 | $2.1M |
| Sep 17, 21 | Bb Biotech AgTenPercentOwner | BUY | 200.0K | $19.93 | $4.0M |
| Sep 16, 21 | Bb Biotech AgTenPercentOwner | BUY | 400.0K | $20.94 | $8.4M |
Over the past 12 months, insiders at MACROGENICS INC filed 2 open-market purchases worth $151K and 0 sales worth $0 on MGNX, which makes them net buyers over the period. The most recent Form 4 was filed on Aug 20, 25.
The largest recent open-market MGNX insider purchase in our data was $8.4M by Bb Biotech Ag, TenPercentOwner, filed on Sep 16, 21.
1 different insider at MACROGENICS INC filed open-market SEC Form 4 transactions on MGNX over the last 12 months.
InsiderTape plots every MGNX insider buy and sell directly on the price chart and flags new SEC Form 4 filings as they arrive, with cluster detection and buy/sell pressure. The data updates daily from SEC EDGAR.
InsiderTape plots every MACROGENICS INC insider buy and sell on the price chart, with buy/sell pressure, cluster detection, and alerts the moment new Form 4s hit. Start a free 7-day trial, cancel anytime.
Does it work? In five years of data, insider clusters beat the Russell 2000 about 60% of the time and the CFO's buy was the sharpest signal of all. See the backtest →
START FREE TRIAL →