Insider · CIK 0001706903
Jeffrey Stuart Peters
Files at MGNX (MACROGENICS INC). First filing Aug 20, 2026, latest Aug 20, 2026.
In brief
Jeffrey Stuart Peters files SEC Form 4 as officer at MGNX (MACROGENICS INC). Since Aug 20, 2026, Jeffrey Stuart Peters has reported 0 open-market buys worth $0 and 1 open-market sell worth $129k, the latest filed on Aug 20, 2026.
A track record needs three past buys with six months of prices behind them; Jeffrey Stuart Peters has 0, so none is measured yet.
The newest scored trade: sold $129k of MGNX on Aug 19, 2026, filed Aug 20, 2026, scored 26 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 1 sell worth $129k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MGNX: MACROGENICS INC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 26Weak | MACROGENICS INC | $129k 31,105 shares | -100% | +214% from low-14% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 19, 2026 | MGNX MACROGENICS INC. | 31,105 0.05% of outstanding | $129k | Aug 19, 2026 | none |
| Mar 6, 2024 | MGNX MACROGENICS INC | 19,625 0.03% of outstanding | $412k | Mar 6, 2024 | $1.5M |
| Feb 26, 2024 | MGNX MACROGENICS INC | 16,124 0.03% of outstanding | $276k | Feb 26, 2024 | $1.3M |
| Feb 5, 2024 | MGNX MACROGENICS INC | 76,251 0.12% of outstanding | $1.3M | Feb 5, 2024 | none |
Transactions
Every row this insider has filed, 13 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 19, 2026 | MGNX MACROGENICS INC | SOpen-market sale Common Stock10b5-1 | -31,105 | $4.15 | $129k | 0 | Aug 20, 2026 |
| Feb 15, 2026 | MGNX MACROGENICS INC | MOption exercise Common Stock | +13,332 | - | - | 36,252 | Feb 17, 2026 |
| Feb 15, 2026 | MGNX MACROGENICS INC | FTax withholding Common Stock | -5,147 | $1.71 | $8,801 | 31,105 | Feb 17, 2026 |
| Feb 15, 2026 | MGNX MACROGENICS INC | MOption exercise Restricted Stock Unitderivative | -13,332 | $0.00 | $0 | 0 | Feb 17, 2026 |
| Feb 12, 2026 | MGNX MACROGENICS INC | AGrant or award Employee Stock Option (right to buy)derivative | +150,000 | $0.00 | $0 | 150,000 | Feb 17, 2026 |
| Feb 12, 2026 | MGNX MACROGENICS INC | AGrant or award Restricted Stock Unitderivative | +25,000 | $0.00 | $0 | 25,000 | Feb 17, 2026 |
| Feb 7, 2026 | MGNX MACROGENICS INC | MOption exercise Common Stock | +6,001 | - | - | 19,712 | Feb 10, 2026 |
| Feb 7, 2026 | MGNX MACROGENICS INC | FTax withholding Common Stock | -2,317 | $1.81 | $4,194 | 17,395 | Feb 10, 2026 |
| Feb 8, 2026 | MGNX MACROGENICS INC | MOption exercise Common Stock | +8,999 | - | - | 26,394 | Feb 10, 2026 |
| Feb 8, 2026 | MGNX MACROGENICS INC | FTax withholding Common Stock | -3,474 | $1.81 | $6,288 | 22,920 | Feb 10, 2026 |
| Feb 7, 2026 | MGNX MACROGENICS INC | MOption exercise Restricted Stock Unitderivative | -6,001 | $0.00 | $0 | 11,999 | Feb 10, 2026 |
| Feb 8, 2026 | MGNX MACROGENICS INC | MOption exercise Restricted Stock Unitderivative | -8,999 | $0.00 | $0 | 9,000 | Feb 10, 2026 |
| Aug 15, 2025 | MGNX MACROGENICS INC | AGrant or award Employee Stock Option (right to buy)derivative | +30,000 | $0.00 | $0 | 30,000 | Aug 19, 2025 |
Questions about Jeffrey Stuart Peters
Answered from the filings on this page, as of the latest one.
Is Jeffrey Stuart Peters buying or selling?
In the last 12 months Jeffrey Stuart Peters reported 0 open-market buys worth $0 and 1 open-market sell worth $129k on SEC Form 4; the latest was sold $129k of MGNX on Aug 19, 2026. Grants, option exercises and tax withholding are not counted.
How did Jeffrey Stuart Peters's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Jeffrey Stuart Peters has 0.
Where does Jeffrey Stuart Peters file Form 4?
Jeffrey Stuart Peters has filed Form 4 at MGNX (MACROGENICS INC) as Senior VP, GC, and Secretary. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.