MarketPeel
Insider Trading Intelligence
PH

Paul J. Hastings

NKTX
CHIEF EXECUTIVE OFFICER · NKARTA, INC. · CIK 0001309702
FILING MIX · LIFETIME51%/49%
BUYS
30
SELLS
29
TOTAL VALUE
$4.54M
COMPANIES
3
ACTIVE SINCE
Jun 2020
HOLDINGS NOW
433,971
AVG SELL PX
$14.68
TRADE KIND
SHOWING 59 / 59
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
24 backtested trades · 8 horizons · 5 pending
Forward-return performance of every backtestable P/S trade by Paul J. Hastings, 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
7d24+58.33%-1.09%+0.97%-2.06%-2.84%
14d24+41.67%-0.85%+1.62%-2.47%-0.61%
30d24+37.50%-3.02%+4.19%-7.21%-3.84%
60d24+70.83%-13.26%+4.58%-17.83%-22.37%
90d24+70.83%-16.71%+5.19%-21.90%-19.13%
180d24(1 pending)+91.30%-32.64%+10.42%-43.06%-40.40%
1y24(1 pending)+73.91%-32.81%+13.70%-46.51%-43.19%
2y24(3 pending)+95.24%-59.49%+29.02%-88.50%-94.53%
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 · 390,247 shares · as of Jun 18, 2026
0141,375282,750424,125565,500202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 30 buys / 29 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
1,776$2.71$4.8K390,247Jun 18, 2026Jun 22, 2026View →
ENGN
ENGENE THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
31,00031,000Jun 16, 2026Jun 17, 2026View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
26,046$2.07$53.9K390,023Jan 15, 2026Jan 20, 2026View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
562,000562,000Jan 6, 2026Jan 8, 2026View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
94,000416,069Jan 6, 2026Jan 8, 2026View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
1,790$1.79$3.2K320,069Jun 18, 2025Jun 20, 2025View →
ENGN
ENGENE THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
22,50022,500Jun 16, 2025Jun 16, 2025View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
377,000377,000Jun 5, 2025Jun 9, 2025View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
17,378$2.20$38.2K319,859Jan 15, 2025Jan 17, 2025View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
565,500565,500Jan 3, 2025Jan 7, 2025View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
94,500337,237Jan 3, 2025Jan 7, 2025View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
1,770$5.60$9.9K240,737Jun 18, 2024Jun 20, 2024View →
ENGN
ENGENE THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
40,00040,000Jun 15, 2024Jun 18, 2024View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE10b5-1
10b5-1 plan
880$28.38$25.0K12,724Jun 13, 2024Jun 13, 2024View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
5,23013,604Jun 12, 2024Jun 13, 2024View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
12,17912,179Jun 12, 2024Jun 13, 2024View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
137,642$13.33$1.83M240,507Mar 4, 2024Mar 5, 2024View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
12,358$13.00$160.7K378,149Mar 1, 2024Mar 5, 2024View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
9,697$8.74$84.8K390,507Jan 16, 2024Jan 18, 2024View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
85,000400,204Jan 4, 2024Jan 8, 2024View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
509,500509,500Jan 4, 2024Jan 8, 2024View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
1,704$4.85$8.3K313,402Jun 20, 2023Jun 22, 2023View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
1,7758,374Jun 14, 2023Jun 16, 2023View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
12,92512,925Jun 14, 2023Jun 16, 2023View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
580$38.34$22.2K6,599Jun 5, 2023Jun 7, 2023View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASE
7,000$29.90$209.3K14,179May 15, 2023May 17, 2023View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE10b5-1
10b5-1 plan
7,000$41.85$292.9K7,179May 15, 2023May 17, 2023View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
7,0000May 15, 2023May 17, 2023View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
3,691$5.49$20.3K313,106Jan 17, 2023Jan 18, 2023View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
386,500386,500Jan 13, 2023Jan 18, 2023View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
64,500316,797Jan 13, 2023Jan 18, 2023View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
498$13.00$6.5K250,461Sep 29, 2022Sep 30, 2022View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
23,376$13.03$304.6K250,959Sep 28, 2022Sep 30, 2022View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
6,126$13.01$79.7K274,335Sep 21, 2022Sep 22, 2022View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
533$56.95$30.4K7,179Jul 11, 2022Jul 13, 2022View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
19,500280,461Jun 17, 2022Jun 21, 2022View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
120,000120,000Jun 17, 2022Jun 21, 2022View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
1,1607,712Jun 8, 2022Jun 8, 2022View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
8,2258,225Jun 8, 2022Jun 8, 2022View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
251,100251,100Jan 14, 2022Jan 19, 2022View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
41,900260,961Jan 14, 2022Jan 19, 2022View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
223$26.53$5.9K219,061Sep 29, 2021Oct 1, 2021View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
8,277$27.20$225.1K219,284Sep 29, 2021Oct 1, 2021View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
3,807$26.89$102.4K227,561Jun 21, 2021Jun 23, 2021View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
4,693$26.39$123.8K231,368Jun 21, 2021Jun 23, 2021View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
7,6267,626Jun 9, 2021Jun 11, 2021View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
1,0666,552Jun 9, 2021Jun 11, 2021View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
630$62.19$39.2K5,486Jun 4, 2021Jun 8, 2021View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
3,130$32.21$100.8K236,061Mar 30, 2021Mar 31, 2021View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
11,461$30.23$346.5K241,600Mar 30, 2021Mar 31, 2021View →
NKTX
NKARTA, INC.
SALE
Chief Executive Officer
2,409$31.24$75.3K239,191Mar 30, 2021Mar 31, 2021View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASE
3,000$13.98$41.9K9,116Mar 5, 2021Mar 9, 2021View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
3,0000Mar 5, 2021Mar 9, 2021View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
3,000$65.88$197.6K6,116Mar 5, 2021Mar 9, 2021View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
157,500157,500Jan 8, 2021Jan 12, 2021View →
NKTX
NKARTA, INC.
PURCHASEGRANT
Stock grant
202,400202,400Jul 9, 2020Jul 10, 2020View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
8,0278,027Jun 9, 2020Jun 11, 2020View →
PCRX
PACIRA BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
1,2606,116Jun 9, 2020Jun 11, 2020View →
PCRX
PACIRA BIOSCIENCES, INC.
SALE
2,025$47.46$96.1K4,856Jun 4, 2020Jun 8, 2020View →
Other insiders · NKTX
Loading peer insiders…
About this filer
CIK 0001309702
ROLE
Chief Executive Officer
PRIMARY
NKTX
COMPANIES
3
ACTIVE SINCE
Jun 2020
MARKETPEEL · /INSIDER/0001309702DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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