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Nkarta, Inc.

NKTX Net buying
CIK 0001787400 #4018 in the set updated 21 Sep 2026
Bought (120 mo)
$290.00M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$4.78M
$27.17K on a plan · $2.77M straight out of an exercise
Sold at will
$1.99M
44 of 69 sales
Net
+$285.22M
+$288.01M against sales at will

By person

21 insiders · 90 transactions
1.5×

Paul J. Hastings holds only 1.5 times base salary in stock. $1.06M of shares against $674.38K in salary for 2025.

Salary from the company's own proxy. The shares are what Paul J. Hastings last reported holding, valued at $2.71, the price Common Stock was last bought or sold at on the open market here, on 18 Jun 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
RA CAPITAL MANAGEMENT, L.P. entity
Director
$123.00M (3)
—
+$123.00M
10,805,129
15.09%
$29.28M
—
George Simeon
Director
$40.00M (4)
—
+$40.00M
451,659
0.6306%
$1.22M
—
Flynn James E
10% owner
$18.00M (2)
—
+$18.00M
2,419,872
3.38%
$6.56M
—
GSK plc entity
Director
$15.00M (1)
—
+$15.00M
3,150,732
4.40%
$8.54M
—
BASKETT FOREST
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
Florence Anthony A. Jr.
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
Makhzoumi Mohamad
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
MAKOWER JOSHUA
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
New Enterprise Associates 15, L.P. entity
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
SANDELL SCOTT D
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
Sonsini Peter W.
10% owner
$12.00M (1)
—
+$12.00M
2,902,115
4.05%
$7.86M
—
Novo Holdings A/S entity
10% owner
$10.00M (1)
—
+$10.00M
2,793,865
3.90%
$7.57M
—
HASTINGS PAUL J
Chief Executive Officer
—
$1.59M (18)
−$1.59M
390,247
0.5448%
$1.06M
+45.2%
Mahmood Nadir
President
—
$1.04M (11) scheduled
−$1.04M
167,727
0.2342%
$454.54K
—
Brandenberger Ralph
Chief Technical Officer
—
$935.02K (14) scheduled
−$935.02K
124,796
0.1742%
$338.20K
—
Trager James
Chief Scientific Officer
—
$666.67K (12) scheduled
−$666.67K
150,959
0.2108%
$409.10K
+177.4%
Rajangam Kanya
Chief Medical Officer
—
$372.80K (1) scheduled
−$372.80K
12,800
0.0179%
$34.69K
—
Hager Alicia J.
Chief Legal Officer
—
$101.58K (6)
−$101.58K
146,735
0.2049%
$397.65K
—
Shook David
See Remarks
—
$58.13K (6)
−$58.13K
190,955
0.2666%
$517.49K
+516.4%
Levin Alyssa
See Remarks
—
$12.84K (1)
−$12.84K
102,662
0.1433%
$278.21K
—
Rose Shawn Marshall
See Remarks
—
—
—
70,000
0.0977%
$189.70K
—

Individual transactions

90
Insider
Date
Role
Action
Shares
Price
Amount
HASTINGS PAUL J
18 Jun 2026
Chief Executive Officer
Sell
1,776
$2.71
$4.81K
Mahmood Nadir
15 Jan 2026
President
Sell
5,649
$2.07
$11.69K
HASTINGS PAUL J
15 Jan 2026
Chief Executive Officer
Sell
26,046
$2.07
$53.92K
HASTINGS PAUL J
18 Jun 2025
Chief Executive Officer
Sell
1,790
$1.79
$3.20K
Hager Alicia J.
15 Jan 2025
Chief Legal Officer
Sell
9,584
$2.20
$21.08K
HASTINGS PAUL J
15 Jan 2025
Chief Executive Officer
Sell
17,378
$2.20
$38.23K
Brandenberger Ralph
15 Jan 2025
Chief Technical Officer
Sell
7,447
$2.20
$16.38K
Levin Alyssa
15 Jan 2025
See Remarks
Sell
5,838
$2.20
$12.84K
Shook David
15 Jan 2025
See Remarks
Sell
8,638
$2.20
$19.00K
Hager Alicia J.
16 Jul 2024
Chief Legal Officer
Sold on a plan
3,396
$8.00
$27.17K
Brandenberger Ralph
18 Jun 2024
Chief Technical Officer
Sell
229
$5.60
$1.28K
Hager Alicia J.
18 Jun 2024
Chief Legal Officer
Sell
727
$5.60
$4.07K
Shook David
18 Jun 2024
Chief Medical Officer
Sell
456
$5.60
$2.55K
HASTINGS PAUL J
18 Jun 2024
Chief Executive Officer
Sell
1,770
$5.60
$9.91K
Trager James
18 Jun 2024
Chief Scientific Officer
Sell
456
$5.60
$2.55K
George Simeon
27 Mar 2024
Director
Buy indirect
451,659
$10.00
$4.52M
George Simeon
27 Mar 2024
Director
Buy indirect
1,548,341
$10.00
$15.48M
RA CAPITAL MANAGEMENT, L.P.
27 Mar 2024
Director
Buy indirect
3,000,000
$10.00
$30.00M
Brandenberger Ralph
1 Mar 2024
Chief Technical Officer
Sold after exercise
8,367
$12.51
$104.67K
Trager James
12 Feb 2024
Chief Scientific Officer
Sell
4,143
$12.00
$49.72K
Hager Alicia J.
16 Jan 2024
Chief Legal Officer
Sell
4,554
$8.74
$39.80K
HASTINGS PAUL J
16 Jan 2024
Chief Executive Officer
Sell
9,697
$8.74
$84.75K
Brandenberger Ralph
16 Jan 2024
Chief Technical Officer
Sell
2,512
$8.74
$21.95K
Trager James
16 Jan 2024
Chief Scientific Officer
Sell
4,560
$8.74
$39.85K
Shook David
16 Jan 2024
Chief Medical Officer
Sell
3,552
$8.74
$31.04K
Shook David
21 Aug 2023
Chief Medical Officer
Sell
1,331
$1.83
$2.44K
HASTINGS PAUL J
20 Jun 2023
Chief Executive Officer
Sell
1,704
$4.85
$8.26K
Mahmood Nadir
20 Jun 2023
See Remarks
Sell
526
$4.85
$2.55K
Shook David
20 Jun 2023
Chief Medical Officer
Sell
439
$4.85
$2.13K
Hager Alicia J.
20 Jun 2023
Chief Legal Officer
Sell
701
$4.85
$3.40K
Brandenberger Ralph
20 Jun 2023
Chief Technical Officer
Sell
221
$4.85
$1.07K
Trager James
20 Jun 2023
Chief Scientific Officer
Sell
439
$4.85
$2.13K
Brandenberger Ralph
17 Jan 2023
Chief Technical Officer
Sell
491
$5.49
$2.70K
Hager Alicia J.
17 Jan 2023
Chief Legal Officer
Sell
1,103
$5.49
$6.06K
HASTINGS PAUL J
17 Jan 2023
Chief Executive Officer
Sell
3,691
$5.49
$20.26K
Mahmood Nadir
17 Jan 2023
See Remarks
Sell
1,122
$5.49
$6.16K
Shook David
17 Jan 2023
Chief Medical Officer
Sell
175
$5.49
$960.75
Trager James
17 Jan 2023
Chief Scientific Officer
Sell
1,115
$5.49
$6.12K
Brandenberger Ralph
6 Oct 2022
Chief Technical Officer
Sold after exercise
842
$14.02
$11.80K
HASTINGS PAUL J
29 Sep 2022
Chief Executive Officer
Sell
498
$13.00
$6.47K
HASTINGS PAUL J
28 Sep 2022
Chief Executive Officer
Sell
23,376
$13.03
$304.61K
HASTINGS PAUL J
21 Sep 2022
Chief Executive Officer
Sell
6,126
$13.01
$79.72K
Mahmood Nadir
15 Aug 2022
See Remarks
Sold after exercise
7,500
$18.03
$135.22K
Brandenberger Ralph
15 Aug 2022
Chief Technical Officer
Sold after exercise
11,000
$17.64
$194.05K
Trager James
15 Aug 2022
Chief Scientific Officer
Sold after exercise
5,000
$17.53
$87.66K
Mahmood Nadir
8 Aug 2022
See Remarks
Sold after exercise
7,500
$15.32
$114.90K
Brandenberger Ralph
8 Aug 2022
Chief Technical Officer
Sold after exercise
11,593
$15.51
$179.78K
Mahmood Nadir
25 Jul 2022
See Remarks
Sold after exercise
7,500
$13.40
$100.48K
Brandenberger Ralph
25 Jul 2022
Chief Technical Officer
Sold after exercise
3,000
$13.41
$40.23K
Brandenberger Ralph
3 Jun 2022
Sr. VP, Technical Operations
Sold after exercise
4,140
$15.00
$62.10K
George Simeon
28 Apr 2022
Director
Buy indirect
666,666
$15.00
$10.00M
George Simeon
28 Apr 2022
Director
Buy indirect
666,667
$15.00
$10.00M
RA CAPITAL MANAGEMENT, L.P.
26 Apr 2022
Director
Buy indirect
2,200,000
$15.00
$33.00M
Brandenberger Ralph
1 Dec 2021
Sr. VP, Technical Operations
Sold after exercise
4,140
$15.64
$64.75K
HASTINGS PAUL J
29 Sep 2021
Chief Executive Officer
Sell
223
$26.53
$5.92K
HASTINGS PAUL J
29 Sep 2021
Chief Executive Officer
Sell
8,277
$27.20
$225.13K
Brandenberger Ralph
1 Sep 2021
See Remarks
Sold after exercise
4,140
$32.08
$132.81K
Rajangam Kanya
5 Aug 2021
Chief Medical Officer
Sold after exercise
10,000
$37.28
$372.80K
Trager James
2 Aug 2021
Chief Scientific Officer
Sold after exercise
3,600
$31.53
$113.51K
Mahmood Nadir
1 Jul 2021
See Remarks
Sold after exercise
6,500
$31.71
$206.12K
HASTINGS PAUL J
21 Jun 2021
Chief Executive Officer
Sell
3,807
$26.89
$102.37K
HASTINGS PAUL J
21 Jun 2021
Chief Executive Officer
Sell
4,693
$26.39
$123.85K
Mahmood Nadir
16 Jun 2021
See Remarks
Exercised, kept
1,800
$3.89
$7.00K
Brandenberger Ralph
2 Jun 2021
See Remarks
Sold after exercise
4,140
$24.50
$101.43K
Mahmood Nadir
10 May 2021
See Remarks
Sell
3,000
$27.16
$81.48K
Trager James
3 May 2021
Chief Scientific Officer
Sold after exercise
2,250
$31.64
$71.19K
Trager James
3 May 2021
Chief Scientific Officer
Sold after exercise
1,350
$31.64
$42.71K
Mahmood Nadir
1 Apr 2021
See Remarks
Sold after exercise
3,500
$32.70
$114.45K
HASTINGS PAUL J
30 Mar 2021
Chief Executive Officer
Sell
3,130
$32.21
$100.82K
HASTINGS PAUL J
30 Mar 2021
Chief Executive Officer
Sell
2,409
$31.24
$75.26K
HASTINGS PAUL J
30 Mar 2021
Chief Executive Officer
Sell
11,461
$30.23
$346.47K
Trager James
2 Feb 2021
Chief Scientific Officer
Sold after exercise
2,800
$40.00
$112.00K
Trager James
1 Feb 2021
Chief Scientific Officer
Sold after exercise
1,566
$39.46
$61.79K
Trager James
1 Feb 2021
Chief Scientific Officer
Sold after exercise
2,034
$38.07
$77.43K
Mahmood Nadir
25 Jan 2021
See Remarks
Sold after exercise
3,500
$48.40
$169.40K
Mahmood Nadir
25 Jan 2021
See Remarks
Sold after exercise
2,000
$48.86
$97.72K
Mahmood Nadir
14 Jan 2021
See Remarks
Exercised, kept
3,083
$3.89
$11.99K
Mahmood Nadir
3 Dec 2020
See Remarks
Exercised, kept
3,000
$3.89
$11.67K
Flynn James E
14 Jul 2020
10% owner
Buy indirect
500,000
$18.00
$9.00M
Flynn James E
14 Jul 2020
10% owner
Buy indirect
500,000
$18.00
$9.00M
RA CAPITAL MANAGEMENT, L.P.
14 Jul 2020
10% owner
Buy indirect
3,333,333
$18.00
$60.00M
Novo Holdings A/S
14 Jul 2020
10% owner
Buy
555,555
$18.00
$10.00M
Florence Anthony A. Jr.
14 Jul 2020
10% owner
Buy indirect
666,666
$18.00
$12.00M
BASKETT FOREST
14 Jul 2020
10% owner
Buy indirect
666,666
$18.00
$12.00M
MAKOWER JOSHUA
14 Jul 2020
10% owner
Buy indirect
666,666
$18.00
$12.00M
Makhzoumi Mohamad
14 Jul 2020
10% owner
Buy indirect
666,666
$18.00
$12.00M
Sonsini Peter W.
14 Jul 2020
10% owner
Buy indirect
666,666
$18.00
$12.00M
SANDELL SCOTT D
14 Jul 2020
10% owner
Buy indirect
666,666
$18.00
$12.00M
New Enterprise Associates 15, L.P.
14 Jul 2020
10% owner
Buy
666,666
$18.00
$12.00M
GSK plc
14 Jul 2020
Director
Buy indirect
833,333
$18.00
$15.00M

What was left out

Form 4 filings counted 184
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 11
Sales on a Rule 10b5-1 plan 1
Sales straight out of an exercise 24
Sales at will 44
Transactions with no price 0
Shares from compensation/vesting 26,112,417
Sales filed before the plan box existed 17
History held since 13 Jul 2020