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Insider Trading Intelligence
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NM

Nadir Mahmood

NKTX
SEE REMARKS · NKARTA, INC. · CIK 0001816598
FILING MIX · LIFETIME55%/45%
BUYS
26
SELLS
21
TOTAL VALUE
$1.21M
COMPANIES
1
ACTIVE SINCE
Jul 2020
HOLDINGS NOW
167,727
AVG SELL PX
$21.54
TRADE KIND
SHOWING 47 / 47
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
11 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by Nadir Mahmood, 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
7d11+72.73%-6.11%+0.11%-6.22%-6.02%—
14d11+45.45%+0.42%+0.97%-0.55%+6.15%—
30d11+45.45%-4.81%+0.75%-5.56%-0.69%—
60d11+72.73%-16.13%-1.70%-14.43%-11.47%—
90d11+81.82%-13.45%+1.92%-15.36%-18.61%—
180d11(1 pending)+100.00%-45.39%+8.44%-53.82%-54.72%—
1y11(1 pending)+80.00%-50.85%+11.00%-61.85%-85.71%—
2y11(1 pending)+100.00%-74.81%+22.17%-96.97%-96.95%—
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
NKTX · 167,727 shares · as of Jan 15, 2026
0137,500275,000412,500550,000202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 26 buys / 21 sellsCOVERAGE · 23 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
NKTX
NKARTA, INC.
SALE
President
5,649$2.07$11.7K167,727Jan 15, 2026Jan 20, 2026 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
80,000——173,376Jan 6, 2026Jan 8, 2026 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
160,000——160,000Jan 6, 2026Jan 8, 2026 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
123,500——123,500Jun 5, 2025Jun 9, 2025 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
123,500——123,500Jan 3, 2025Jan 7, 2025 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
62,000——93,376Jan 3, 2025Jan 7, 2025 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
550,000——550,000Jul 29, 2024Jul 31, 2024 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
526$4.85$2.6K85,776Jun 20, 2023Jun 22, 2023 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
1,122$5.49$6.2K84,302Jan 17, 2023Jan 18, 2023 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
37,500——85,424Jan 13, 2023Jan 18, 2023 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
75,000——75,000Jan 13, 2023Jan 18, 2023 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
7,500$3.89$29.2K53,588Aug 15, 2022Aug 17, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
7,500$18.03$135.2K46,088Aug 15, 2022Aug 17, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
4,819——27,703Aug 15, 2022Aug 17, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
2,681——68,062Aug 15, 2022Aug 17, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
7,500——32,522Aug 8, 2022Aug 10, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
7,500$3.89$29.2K53,588Aug 8, 2022Aug 10, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
7,500$15.32$114.9K46,088Aug 8, 2022Aug 10, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
7,500$13.40$100.5K46,088Jul 25, 2022Jul 26, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
7,500$3.89$29.2K53,588Jul 25, 2022Jul 26, 2022 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
7,500——63,243Jul 25, 2022Jul 26, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
6,000——46,088Jun 17, 2022Jun 21, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
40,000——40,000Jun 17, 2022Jun 21, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
76,800——76,800Jan 14, 2022Jan 19, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
12,800——40,088Jan 14, 2022Jan 19, 2022 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
3,500$3.89$13.6K33,788Jul 1, 2021Jul 6, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
6,500$31.71$206.1K27,288Jul 1, 2021Jul 6, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,500——70,743Jul 1, 2021Jul 6, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
1,800——47,522Jun 16, 2021Jun 17, 2021 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
1,800$3.89$7.0K30,288Jun 16, 2021Jun 17, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,000$27.16$81.5K28,488May 10, 2021May 12, 2021 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
3,500$3.89$13.6K34,988Apr 1, 2021Apr 2, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,500$32.70$114.5K31,488Apr 1, 2021Apr 2, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,500——74,243Apr 1, 2021Apr 2, 2021 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
5,500$3.89$21.4K36,988Jan 25, 2021Jan 26, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
5,500——77,743Jan 25, 2021Jan 26, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
2,000$48.86$97.7K34,988Jan 25, 2021Jan 26, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,500$48.40$169.4K31,488Jan 25, 2021Jan 26, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,083——49,322Jan 14, 2021Jan 19, 2021 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
3,083$3.89$12.0K31,488Jan 14, 2021Jan 19, 2021 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
52,500——52,500Jan 8, 2021Jan 12, 2021 ↗View →
NKTX
NKARTA, INC.
SALE
See Remarks
3,000——52,405Dec 3, 2020Dec 7, 2020 ↗View →
NKTX
NKARTA, INC.
PURCHASE
See Remarks
3,000$3.89$11.7K28,405Dec 3, 2020Dec 7, 2020 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
50,000——50,000Oct 2, 2020Dec 3, 2020 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
50,000——50,000Oct 2, 2020Oct 5, 2020 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
48,400——48,400Jul 9, 2020Jul 10, 2020 ↗View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
27,600——27,600Jul 9, 2020Jul 10, 2020 ↗View →
Other insiders · NKTX
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About this filer
CIK 0001816598
ROLE
See Remarks
PRIMARY
NKTX
COMPANIES
1
ACTIVE SINCE
Jul 2020
MARKETPEEL · /INSIDER/0001816598DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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