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Jeffrey Stuart Peters

MGNX
SENIOR VP AND GENERAL COUNSEL · MACROGENICS INC · CIK 0001706903
FILING MIX · LIFETIME44%/56%
BUYS
27
SELLS
34
TOTAL VALUE
$6.62M
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
0
AVG SELL PX
$14.14
TRADE KIND
SHOWING 61 / 61
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
12 backtested trades · 8 horizons
Forward-return performance of every backtestable P/S trade by Jeffrey Stuart Peters, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d12+8.33%+6.68%+1.39%+5.29%+3.23%—
14d12+58.33%-2.21%+0.07%-2.28%-6.98%—
30d12+66.67%+0.04%+2.41%-2.37%-11.52%—
60d12+66.67%-28.26%+4.80%-33.06%-19.78%—
90d12+100.00%-47.16%+7.40%-54.56%-80.78%—
180d12+100.00%-63.42%+12.68%-76.10%-91.64%—
1y12+91.67%-54.43%+13.75%-68.18%-93.77%—
2y12+100.00%-83.16%+32.18%-115.34%-112.19%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MGNX · 0 shares · as of Feb 15, 2026
042,50085,000127,500170,000202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 27 buys / 34 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MGNX
MACROGENICS INC
SALE
Senior VP, GC, and Secretary
5,147$1.71$8.8K31,105Feb 15, 2026Feb 17, 2026 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP, GC, and Secretary
13,332——36,252Feb 15, 2026Feb 17, 2026 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP, GC, and Secretary
13,332——0Feb 15, 2026Feb 17, 2026 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
25,000——25,000Feb 12, 2026Feb 17, 2026 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
150,000——150,000Feb 12, 2026Feb 17, 2026 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP, GC, and Secretary
8,999——26,394Feb 8, 2026Feb 10, 2026 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP, GC, and Secretary
8,999——9,000Feb 8, 2026Feb 10, 2026 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP, GC, and Secretary
3,474$1.81$6.3K22,920Feb 8, 2026Feb 10, 2026 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP, GC, and Secretary
6,001——19,712Feb 7, 2026Feb 10, 2026 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP, GC, and Secretary
6,001——11,999Feb 7, 2026Feb 10, 2026 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP, GC, and Secretary
2,317$1.81$4.2K17,395Feb 7, 2026Feb 10, 2026 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
30,000——30,000Aug 15, 2025Aug 19, 2025 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
13,332——18,858Feb 15, 2025Feb 19, 2025 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
13,332——13,332Feb 15, 2025Feb 19, 2025 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
5,147$2.56$13.2K13,711Feb 15, 2025Feb 19, 2025 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
9,001——9,001Feb 8, 2025Feb 11, 2025 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
3,475$2.60$9.0K5,526Feb 8, 2025Feb 11, 2025 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
9,001——17,999Feb 8, 2025Feb 11, 2025 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
105,000——105,000Feb 7, 2025Feb 11, 2025 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
18,000——18,000Feb 7, 2025Feb 11, 2025 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
147$15.51$2.3K8,748Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
3,165$18.22$57.7K0Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
232$16.38$3.8K8,516Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
42,500$15.07$640.5K8,895Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
42,500$4.82$204.8K127,500Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
42,500$4.82$204.8K51,395Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
5,351$17.74$94.9K3,165Apr 4, 2024Apr 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
19,625$21.50$421.9K8,895Mar 6, 2024Mar 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
8,750$10.15$88.8K39,375Mar 6, 2024Mar 8, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
8,750$10.15$88.8K28,520Mar 6, 2024Mar 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
10,875$11.50$125.1K0Mar 6, 2024Mar 8, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
10,875$11.50$125.1K19,770Mar 6, 2024Mar 8, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
16,124$17.22$277.7K8,895Feb 26, 2024Feb 28, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
26,250——0Feb 22, 2024Feb 26, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
10,126$17.11$173.3K25,019Feb 22, 2024Feb 26, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
26,250——35,145Feb 22, 2024Feb 26, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
4,441$17.40$77.3K8,895Feb 15, 2024Feb 20, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
13,336——13,336Feb 15, 2024Feb 20, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
13,336——26,664Feb 15, 2024Feb 20, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
71,000——71,000Feb 8, 2024Feb 12, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
27,000——27,000Feb 8, 2024Feb 12, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
21,875$16.50$360.9K0Feb 5, 2024Feb 7, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
54,376$11.50$625.3K54,376Feb 5, 2024Feb 7, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
21,875——48,125Feb 5, 2024Feb 7, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
54,376——10,875Feb 5, 2024Feb 7, 2024 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
21,875$10.15$222.0K76,251Feb 5, 2024Feb 7, 2024 ↗View →
MGNX
MACROGENICS INC
SALE10b5-1
10b5-1 plan
54,376$16.50$897.2K21,875Feb 5, 2024Feb 7, 2024 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
5,372$6.03$32.4K0Mar 10, 2023Mar 14, 2023 ↗View →
MGNX
MACROGENICS INC
PURCHASE
Senior VP and General Counsel
8,750——8,750Feb 22, 2023Feb 24, 2023 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
8,750——0Feb 22, 2023Feb 24, 2023 ↗View →
MGNX
MACROGENICS INC
SALE
Senior VP and General Counsel
3,378$6.55$22.1K5,372Feb 22, 2023Feb 24, 2023 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
170,000——170,000Feb 15, 2023Feb 17, 2023 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
40,000——40,000Feb 15, 2023Feb 17, 2023 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
35,000——35,000Feb 22, 2022Feb 24, 2022 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
70,000——70,000Feb 22, 2022Feb 24, 2022 ↗View →
MGNX
MACROGENICS INC
SALE
General Counsel
21,749$26.50$576.3K0Mar 8, 2021Mar 9, 2021 ↗View →
MGNX
MACROGENICS INC
PURCHASE
General Counsel
21,749$11.50$250.1K21,749Mar 8, 2021Mar 9, 2021 ↗View →
MGNX
MACROGENICS INC
SALE
General Counsel
21,749——65,251Mar 8, 2021Mar 9, 2021 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
90,000——90,000Feb 22, 2021Feb 24, 2021 ↗View →
MGNX
MACROGENICS INC
SALE
General Counsel
202$30.00$6.1K0Jul 2, 2020Jul 6, 2020 ↗View →
MGNX
MACROGENICS INC
PURCHASEGRANT
Stock grant
87,000$11.50$1.00M87,000Feb 20, 2020Feb 24, 2020 ↗View →
Other insiders · MGNX
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About this filer
CIK 0001706903
ROLE
Senior VP and General Counsel
PRIMARY
MGNX
COMPANIES
1
ACTIVE SINCE
Feb 2020
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