Nkarta (NKTX)
Nkarta on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.
3.4M
Short interest
settlement 2026-10-15
4.9
Days to cover
-1.0 days vs prior
45.1%
Short share of volume
2026-11-02
103
Fails to deliver
settlement 2026-10-14
Mon 9 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in NKTX is 3,423,724 shares, down 82,809 shares over the last month. Over the last 48 readings it ranged from 3,201,519 shares (15 July 2026) to 10,850,709 shares (15 December 2025). The latest reading sits at the bottom of that range. At the reported average volume of 705K shares a day that is 4.9 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 3,423,724 | -6.5% | 704,670 | 4.86 |
| 2026-09-30 | 3,661,385 | +4.4% | 621,738 | 5.89 |
| 2026-09-15 | 3,506,533 | +2.0% | 642,718 | 5.46 |
| 2026-08-31 | 3,438,080 | -4.5% | 496,963 | 6.92 |
| 2026-08-14 | 3,598,964 | +8.2% | 576,018 | 6.25 |
| 2026-07-31 | 3,326,008 | +3.9% | 621,328 | 5.35 |
| 2026-07-15 | 3,201,519 | -5.3% | 991,872 | 3.23 |
| 2026-06-30 | 3,380,838 | -2.2% | 665,479 | 5.08 |
| 2026-06-15 | 3,457,738 | -33.9% | 540,647 | 6.40 |
| 2026-05-29 | 5,227,290 | +1.2% | 513,828 | 10.17 |
| 2026-05-15 | 5,163,703 | -2.1% | 873,875 | 5.91 |
| 2026-04-30 | 5,272,916 | -2.5% | 1,359,324 | 3.88 |
| 2026-04-15 | 5,406,419 | -2.3% | 555,536 | 9.73 |
| 2026-03-31 | 5,531,075 | +0.3% | 575,526 | 9.61 |
| 2026-03-13 | 5,515,268 | -5.8% | 741,904 | 7.43 |
| 2026-02-27 | 5,857,300 | -9.5% | 639,354 | 9.16 |
| 2026-02-13 | 6,470,856 | -1.0% | 677,812 | 9.55 |
| 2026-01-30 | 6,538,944 | -3.6% | 965,466 | 6.77 |
| 2026-01-15 | 6,783,697 | +12.7% | 817,347 | 8.30 |
| 2025-12-31 | 6,020,166 | -44.5% | 669,661 | 8.99 |
| 2025-12-15 | 10,850,709 | +5.3% | 654,453 | 16.58 |
| 2025-11-28 | 10,309,675 | +7.2% | 617,972 | 16.68 |
| 2025-11-14 | 9,616,203 | +6.3% | 732,782 | 13.12 |
| 2025-10-31 | 9,049,362 | -5.7% | 1,111,367 | 8.14 |
| 2025-10-15 | 9,591,414 | +12.2% | 1,468,839 | 6.53 |
| 2025-09-30 | 8,546,639 | -0.9% | 708,991 | 12.05 |
| 2025-09-15 | 8,622,536 | -1.7% | 565,744 | 15.24 |
| 2025-08-29 | 8,774,845 | +1.2% | 485,584 | 18.07 |
| 2025-08-15 | 8,674,237 | +7.4% | 553,801 | 15.66 |
| 2025-07-31 | 8,079,122 | +6.3% | 674,474 | 11.98 |
| 2025-07-15 | 7,602,391 | +0.9% | 415,832 | 18.28 |
| 2025-06-30 | 7,535,383 | +3.9% | 526,153 | 14.32 |
| 2025-06-13 | 7,254,369 | +3.1% | 497,854 | 14.57 |
| 2025-05-30 | 7,032,638 | -7.1% | 377,425 | 18.63 |
| 2025-05-15 | 7,568,307 | +0.7% | 458,436 | 16.51 |
| 2025-04-30 | 7,512,710 | +4.4% | 802,353 | 9.36 |
| 2025-04-15 | 7,196,878 | -8.3% | 1,040,801 | 6.91 |
| 2025-03-31 | 7,852,264 | -16.5% | 3,610,298 | 2.17 |
| 2025-03-14 | 9,402,057 | -4.8% | 973,651 | 9.66 |
| 2025-02-28 | 9,871,623 | +2.6% | 1,071,294 | 9.21 |
| 2025-02-14 | 9,623,089 | -5.1% | 680,022 | 14.15 |
| 2025-01-31 | 10,143,706 | +0.9% | 1,175,598 | 8.63 |
| 2025-01-15 | 10,051,289 | +1.0% | 1,253,810 | 8.02 |
| 2024-12-31 | 9,953,939 | +16.5% | 1,578,569 | 6.31 |
| 2024-12-13 | 8,544,601 | +28.6% | 2,957,683 | 2.89 |
| 2024-11-29 | 6,646,819 | -1.9% | 1,422,847 | 4.67 |
| 2024-11-15 | 6,771,959 | -29.2% | 1,105,903 | 6.12 |
| 2024-10-31 | 9,569,898 | -8.2% | 849,034 | 11.27 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of NKTX volume is 45.1%, up 1.4 points over the last five sessions. Over the last 30 readings it ranged from 19.8% (19 October 2026) to 54.0% (23 October 2026). The latest reading is 8.2 points above the 30-session average of 36.9%, on 751K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 339K | 751K | 45.1% | 734 |
| 2026-10-30 | 247K | 654K | 37.8% | 3,139 |
| 2026-10-29 | 142K | 347K | 40.9% | 0 |
| 2026-10-28 | 174K | 464K | 37.5% | 43,963 |
| 2026-10-27 | 390K | 1.4M | 28.5% | 83,498 |
| 2026-10-26 | 261K | 597K | 43.7% | 3,000 |
| 2026-10-23 | 292K | 540K | 54.0% | 0 |
| 2026-10-22 | 488K | 1.0M | 47.9% | 14,132 |
| 2026-10-21 | 87K | 410K | 21.3% | 0 |
| 2026-10-20 | 155K | 626K | 24.8% | 0 |
| 2026-10-19 | 125K | 632K | 19.8% | 673 |
| 2026-10-16 | 320K | 1.0M | 30.7% | 822 |
| 2026-10-15 | 273K | 935K | 29.2% | 0 |
| 2026-10-14 | 77K | 269K | 28.7% | 0 |
| 2026-10-13 | 160K | 379K | 42.2% | 5,000 |
| 2026-10-12 | 89K | 298K | 29.9% | 1,752 |
| 2026-10-09 | 232K | 472K | 49.2% | 0 |
| 2026-10-08 | 66K | 204K | 32.3% | 0 |
| 2026-10-07 | 86K | 242K | 35.7% | 0 |
| 2026-10-06 | 120K | 422K | 28.5% | 14,577 |
| 2026-10-05 | 82K | 195K | 42.0% | 105 |
| 2026-10-02 | 79K | 156K | 50.7% | 400 |
| 2026-10-01 | 58K | 119K | 48.5% | 5,747 |
| 2026-09-30 | 42K | 85K | 49.4% | 3 |
| 2026-09-29 | 87K | 250K | 35.0% | 1,400 |
| 2026-09-28 | 92K | 411K | 22.4% | 11,854 |
| 2026-09-25 | 136K | 349K | 38.9% | 0 |
| 2026-09-24 | 189K | 449K | 42.0% | 50,189 |
| 2026-09-23 | 234K | 524K | 44.8% | 81,303 |
| 2026-09-22 | 51K | 199K | 25.8% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 14 October 2026, the fails-to-deliver balance in NKTX is 103 shares, down 463 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (24 February 2026) to 61,411 shares (19 May 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-14 | 103 | $2.10 | $216 |
| 2026-09-29 | 566 | $2.67 | $2K |
| 2026-09-22 | 57 | $2.88 | $164 |
| 2026-09-14 | 241 | $2.91 | $701 |
| 2026-09-03 | 548 | $2.77 | $2K |
| 2026-08-24 | 1,800 | $2.66 | $5K |
| 2026-08-21 | 1,673 | $2.47 | $4K |
| 2026-07-10 | 905 | $3.21 | $3K |
| 2026-06-30 | 1,960 | $2.85 | $6K |
| 2026-06-29 | 1,304 | $2.83 | $4K |
| 2026-06-18 | 95 | $2.64 | $251 |
| 2026-06-05 | 669 | $2.77 | $2K |
| 2026-05-20 | 800 | $2.68 | $2K |
| 2026-05-19 | 61,411 | $2.68 | $165K |
| 2026-05-15 | 976 | $2.81 | $3K |
| 2026-05-14 | 5,379 | $3.06 | $16K |
| 2026-05-13 | 2,071 | $3.28 | $7K |
| 2026-05-08 | 5,375 | $3.15 | $17K |
| 2026-05-07 | 119 | $3.32 | $395 |
| 2026-04-27 | 5,350 | $2.92 | $16K |
| 2026-04-21 | 933 | $3.49 | $3K |
| 2026-04-20 | 2,547 | $3.47 | $9K |
| 2026-04-17 | 6,753 | $2.80 | $19K |
| 2026-04-14 | 2,500 | $2.29 | $6K |
| 2026-03-19 | 13,900 | $2.24 | $31K |
| 2026-03-17 | 397 | $2.28 | $905 |
| 2026-03-02 | 113 | $2.70 | $305 |
| 2026-02-24 | 1 | $2.31 | $2 |
| 2026-02-12 | 670 | $2.00 | $1K |
| 2026-02-05 | 13,687 | $2.05 | $28K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for NKTX in the last 90 days. The most recent filings are listed below. Latest filing: HASTINGS PAUL J (Chief Executive Officer) on 2026-06-18.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-06-18 | HASTINGS PAUL J | Chief Executive Officer | Sell | 2K | $2.71 | $5K | 390K |
| 2026-01-15 | Mahmood Nadir | President | Sell | 6K | $2.07 | $12K | 168K |
| 2026-01-15 | HASTINGS PAUL J | Chief Executive Officer | Sell | 26K | $2.07 | $54K | 390K |
| 2026-01-06 | Rose Shawn Marshall | See Remarks | Grant | 70K | $0.00 | $0 | 70K |
| 2026-01-06 | Mahmood Nadir | President | Grant | 80K | $0.00 | $0 | 173K |
| 2026-01-06 | HASTINGS PAUL J | Chief Executive Officer | Grant | 94K | $0.00 | $0 | 416K |
| 2025-06-18 | HASTINGS PAUL J | Chief Executive Officer | Sell | 2K | $1.79 | $3K | 320K |
| 2025-01-15 | Hager Alicia J. | Chief Legal Officer | Sell | 10K | $2.20 | $21K | 147K |
| 2025-01-15 | HASTINGS PAUL J | Chief Executive Officer | Sell | 17K | $2.20 | $38K | 320K |
| 2025-01-15 | Brandenberger Ralph | Chief Technical Officer | Sell | 7K | $2.20 | $16K | 125K |
| 2025-01-15 | Levin Alyssa | See Remarks | Sell | 6K | $2.20 | $13K | 103K |
| 2025-01-15 | Shook David | See Remarks | Sell | 9K | $2.20 | $19K | 191K |
| 2025-01-03 | HASTINGS PAUL J | Chief Executive Officer | Grant | 95K | $0.00 | $0 | 337K |
| 2025-01-03 | Mahmood Nadir | President | Grant | 62K | $0.00 | $0 | 93K |
| 2025-01-03 | Hager Alicia J. | Chief Legal Officer | Grant | 53K | $0.00 | $0 | 156K |
| 2025-01-03 | Brandenberger Ralph | Chief Technical Officer | Grant | 53K | $0.00 | $0 | 132K |
| 2025-01-03 | Levin Alyssa | See Remarks | Grant | 53K | $0.00 | $0 | 109K |
| 2025-01-03 | Shook David | See Remarks | Grant | 59K | $0.00 | $0 | 200K |
| 2024-08-21 | Shook David | See Remarks | Grant | 1K | $5.11 | $7K | 139K |
| 2024-07-16 | Hager Alicia J. | Chief Legal Officer | Sell | 3K | $8.00 | $27K | 104K |
| 2024-07-15 | Shook David | See Remarks | Grant | 23K | $0.00 | $0 | 140K |
| 2024-06-18 | Brandenberger Ralph | Chief Technical Officer | Sell | 229 | $5.60 | $1K | 80K |
| 2024-06-18 | Hager Alicia J. | Chief Legal Officer | Sell | 727 | $5.60 | $4K | 107K |
| 2024-06-18 | Shook David | Chief Medical Officer | Sell | 456 | $5.60 | $3K | 117K |
| 2024-06-18 | HASTINGS PAUL J | Chief Executive Officer | Sell | 2K | $5.60 | $10K | 241K |
| 2024-06-18 | Trager James | Chief Scientific Officer | Sell | 456 | $5.60 | $3K | 151K |
| 2024-03-27 | George Simeon | Director | Buy | 452K | $10.00 | $4.5M | 452K |
| 2024-03-27 | George Simeon | Director | Buy | 1.5M | $10.00 | $15.5M | 1.5M |
| 2024-03-27 | RA CAPITAL MANAGEMENT, L.P. | Director,TenPercentOwner | Buy | 3.0M | $10.00 | $30.0M | 10.1M |
| 2024-03-04 | HASTINGS PAUL J | Chief Executive Officer | Returned to company | 138K | $13.33 | $1.8M | 241K |
| 2024-03-01 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 3K | $3.89 | $11K | 88K |
| 2024-03-01 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 4K | $3.89 | $15K | 85K |
| 2024-03-01 | Brandenberger Ralph | Chief Technical Officer | Sell | 8K | $12.51 | $105K | 80K |
| 2024-03-01 | HASTINGS PAUL J | Chief Executive Officer | Returned to company | 12K | $13.00 | $161K | 378K |
| 2024-02-12 | Trager James | Chief Scientific Officer | Sell | 4K | $12.00 | $50K | 149K |
| 2024-01-16 | Hager Alicia J. | Chief Legal Officer | Sell | 5K | $8.74 | $40K | 108K |
| 2024-01-16 | HASTINGS PAUL J | Chief Executive Officer | Sell | 10K | $8.74 | $85K | 391K |
| 2024-01-16 | Brandenberger Ralph | Chief Technical Officer | Sell | 3K | $8.74 | $22K | 82K |
| 2024-01-16 | Trager James | Chief Scientific Officer | Sell | 5K | $8.74 | $40K | 154K |
| 2024-01-16 | Shook David | Chief Medical Officer | Sell | 4K | $8.74 | $31K | 115K |
| 2024-01-04 | Hager Alicia J. | Chief Legal Officer | Grant | 56K | $0.00 | $0 | 112K |
| 2024-01-04 | Levin Alyssa | See Remarks | Grant | 56K | $0.00 | $0 | 56K |
| 2024-01-04 | HASTINGS PAUL J | Chief Executive Officer | Grant | 85K | $0.00 | $0 | 400K |
| 2024-01-04 | Trager James | Chief Scientific Officer | Grant | 56K | $0.00 | $0 | 158K |
| 2024-01-04 | Brandenberger Ralph | Chief Technical Officer | Grant | 56K | $0.00 | $0 | 84K |
| 2024-01-04 | Shook David | Chief Medical Officer | Grant | 56K | $0.00 | $0 | 119K |
| 2023-08-21 | Shook David | Chief Medical Officer | Sell | 1K | $1.83 | $2K | 61K |
| 2023-06-20 | HASTINGS PAUL J | Chief Executive Officer | Sell | 2K | $4.85 | $8K | 313K |
| 2023-06-20 | Mahmood Nadir | See Remarks | Sell | 526 | $4.85 | $3K | 86K |
| 2023-06-20 | Shook David | Chief Medical Officer | Sell | 439 | $4.85 | $2K | 62K |
| 2023-06-20 | Hager Alicia J. | Chief Legal Officer | Sell | 701 | $4.85 | $3K | 56K |
| 2023-06-20 | Brandenberger Ralph | Chief Technical Officer | Sell | 221 | $4.85 | $1K | 28K |
| 2023-06-20 | Trager James | Chief Scientific Officer | Sell | 439 | $4.85 | $2K | 100K |
| 2023-01-17 | Brandenberger Ralph | Chief Technical Officer | Sell | 491 | $5.49 | $3K | 28K |
| 2023-01-17 | Hager Alicia J. | Chief Legal Officer | Sell | 1K | $5.49 | $6K | 57K |
| 2023-01-17 | HASTINGS PAUL J | Chief Executive Officer | Sell | 4K | $5.49 | $20K | 313K |
| 2023-01-17 | Mahmood Nadir | See Remarks | Sell | 1K | $5.49 | $6K | 84K |
| 2023-01-17 | Shook David | Chief Medical Officer | Sell | 175 | $5.49 | $961 | 60K |
| 2023-01-17 | Trager James | Chief Scientific Officer | Sell | 1K | $5.49 | $6K | 99K |
| 2023-01-13 | Brandenberger Ralph | Chief Technical Officer | Grant | 21K | $0.00 | $0 | 29K |
| 2023-01-13 | Hager Alicia J. | Chief Legal Officer | Grant | 38K | $0.00 | $0 | 58K |
| 2023-01-13 | HASTINGS PAUL J | Chief Executive Officer | Grant | 65K | $0.00 | $0 | 317K |
| 2023-01-13 | Mahmood Nadir | See Remarks | Grant | 38K | $0.00 | $0 | 85K |
| 2023-01-13 | Shook David | Chief Medical Officer | Grant | 38K | $0.00 | $0 | 60K |
| 2023-01-13 | Trager James | Chief Scientific Officer | Grant | 38K | $0.00 | $0 | 100K |
| 2022-10-06 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 842 | $3.89 | $3K | 9K |
| 2022-10-06 | Brandenberger Ralph | Chief Technical Officer | Sell | 842 | $14.02 | $12K | 8K |
| 2022-09-29 | HASTINGS PAUL J | Chief Executive Officer | Sell | 498 | $13.00 | $6K | 250K |
| 2022-09-28 | HASTINGS PAUL J | Chief Executive Officer | Sell | 23K | $13.03 | $305K | 251K |
| 2022-09-21 | HASTINGS PAUL J | Chief Executive Officer | Sell | 6K | $13.01 | $80K | 274K |
| 2022-08-15 | Mahmood Nadir | See Remarks | Sell | 8K | $18.03 | $135K | 46K |
| 2022-08-15 | Mahmood Nadir | See Remarks | Exercise or conversion | 8K | $3.89 | $29K | 54K |
| 2022-08-15 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 11K | $3.89 | $43K | 19K |
| 2022-08-15 | Brandenberger Ralph | Chief Technical Officer | Sell | 11K | $17.64 | $194K | 8K |
| 2022-08-15 | Trager James | Chief Scientific Officer | Exercise or conversion | 5K | $3.89 | $19K | 67K |
| 2022-08-15 | Trager James | Chief Scientific Officer | Sell | 5K | $17.53 | $88K | 62K |
| 2022-08-08 | Mahmood Nadir | See Remarks | Sell | 8K | $15.32 | $115K | 46K |
| 2022-08-08 | Mahmood Nadir | See Remarks | Exercise or conversion | 8K | $3.89 | $29K | 54K |
| 2022-08-08 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 7K | $3.89 | $27K | 19K |
| 2022-08-08 | Brandenberger Ralph | Chief Technical Officer | Sell | 12K | $15.51 | $180K | 8K |
| 2022-08-08 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 4K | $0.41 | $2K | 12K |
| 2022-08-08 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 340 | $4.77 | $2K | 19K |
| 2022-07-25 | Mahmood Nadir | See Remarks | Sell | 8K | $13.40 | $101K | 46K |
| 2022-07-25 | Mahmood Nadir | See Remarks | Exercise or conversion | 8K | $3.89 | $29K | 54K |
| 2022-07-25 | Brandenberger Ralph | Chief Technical Officer | Exercise or conversion | 3K | $0.41 | $1K | 11K |
| 2022-07-25 | Brandenberger Ralph | Chief Technical Officer | Sell | 3K | $13.41 | $40K | 8K |
| 2022-06-17 | Brandenberger Ralph | Sr. VP, Technical Operations | Grant | 3K | $0.00 | $0 | 8K |
| 2022-06-17 | Trager James | Chief Scientific Officer | Grant | 5K | $0.00 | $0 | 62K |
| 2022-06-17 | Hager Alicia J. | Chief Legal Officer | Grant | 8K | $0.00 | $0 | 21K |
| 2022-06-17 | Mahmood Nadir | See Remarks | Grant | 6K | $0.00 | $0 | 46K |
| 2022-06-17 | HASTINGS PAUL J | Chief Executive Officer | Grant | 20K | $0.00 | $0 | 280K |
| 2022-06-03 | Brandenberger Ralph | Sr. VP, Technical Operations | Sell | 4K | $15.00 | $62K | 5K |
| 2022-06-03 | Brandenberger Ralph | Sr. VP, Technical Operations | Exercise or conversion | 340 | $0.41 | $139 | 6K |
| 2022-06-03 | Brandenberger Ralph | Sr. VP, Technical Operations | Exercise or conversion | 405 | $4.77 | $2K | 6K |
| 2022-06-03 | Brandenberger Ralph | Sr. VP, Technical Operations | Exercise or conversion | 1K | $3.89 | $5K | 7K |
| 2022-06-03 | Brandenberger Ralph | Sr. VP, Technical Operations | Exercise or conversion | 2K | $3.89 | $8K | 9K |
| 2022-04-28 | George Simeon | Director | Buy | 667K | $15.00 | $10.0M | 667K |
| 2022-04-28 | George Simeon | Director | Buy | 667K | $15.00 | $10.0M | 667K |
| 2022-04-26 | Shah Rajeev M. | Director,TenPercentOwner | Buy | 2.2M | $15.00 | $33.0M | 7.8M |
| 2022-01-14 | Brandenberger Ralph | Sr. VP, Technical Operations | Grant | 5K | $0.00 | $0 | 5K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSONNo holder on file reports 5% or more of NKTX in its latest filing.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-05-19 | 13D/Ano. 3 | Mohamad H. Makhzoumiindividual | 3.6M | 4.9% | 2026-05-19 |
| 2026-05-19 | 13D/Ano. 3 | Scott D. Sandellindividual | 3.6M | 4.9% | 2026-05-19 |
| 2026-05-19 | 13D/Ano. 3 | Anthony A. Florence, Jr.individual | 3.6M | 4.9% | 2026-05-19 |
| 2026-05-19 | 13D/Ano. 3 | Forest Baskettindividual | 3.6M | 4.9% | 2026-05-19 |
| 2026-05-19 | 13D/Ano. 3 | NEA 15 GP, LLCother entity | 3.6M | 4.9% | 2026-05-19 |
| 2026-05-19 | 13D/Ano. 3 | NEA Partners 15, L.P.partnership | 3.6M | 4.9% | 2026-05-19 |
| 2026-05-19 | 13D/Ano. 3 | New Enterprise Associates 15, L.P.partnership | 3.6M | 4.9% | 2026-05-19 |
| 2026-02-17 | 13G/Ano. 2 | TANG CAPITAL MANAGEMENT, LLCother entity | 1.5M | 2.1% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 2 | KEVIN TANGindividual | 1.5M | 2.1% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 2 | TANG CAPITAL PARTNERS INTERNATIONAL, LPpartnership | 952K | 1.3% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 2 | TANG CAPITAL PARTNERS, LPpartnership | 529K | 0.8% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 2 | TANG CAPITAL PARTNERS IV, INCcorporation | 0 | 0.0% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 2 | TANG CAPITAL PARTNERS III, INCcorporation | 0 | 0.0% | 2025-12-31 |
| 2025-11-24 | 13D/Ano. 3 | Srinivas Akkarajuindividual | 3.5M | 4.9% | 2025-11-20 |
| 2025-11-24 | 13D/Ano. 3 | Samsara BioCapital, L.P.partnership | 3.5M | 4.9% | 2025-11-20 |
| 2025-11-24 | 13D/Ano. 3 | Samsara BioCapital GP, LLCother entity | 3.5M | 4.9% | 2025-11-20 |
| 2025-11-14 | 13G/Ano. 1 | Kenneth Griffinparent holding company, individual | 2.9M | 4.1% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel GP LLCparent holding company, other entity | 2.4M | 3.4% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Advisors LLCinvestment adviser, parent holding company, other entity | 2.4M | 3.4% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Advisors Holdings LPparent holding company, partnership | 2.4M | 3.4% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Securities Group LPparent holding company, partnership | 456K | 0.6% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Securities GP LLCparent holding company, other entity | 456K | 0.6% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Securities LLCbroker-dealer, other entity | 456K | 0.6% | 2025-09-30 |
| 2025-10-17 | 13G/Ano. 1 | BlackRock, Inc.parent holding company | 3.5M | 5.0% | 2025-09-30 |
13F holders
Tracked managers holding NKTX at their latest 13F. JSON7 of the 30 tracked managers held NKTX at their latest 13F, $19.5M in total at quarter-end prices. Citadel Advisors is the largest at $6.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 2.2M | $6.2M | 0.00% | +391K |
| Two Sigma Investments | 2026-06-30 | 1.9M | $5.3M | 0.00% | -174K |
| Renaissance Technologies | 2026-06-30 | 1.2M | $3.3M | 0.00% | -555K |
| AQR Capital Management | 2026-06-30 | 1.1M | $3.0M | 0.00% | +459K |
| Millennium Management | 2026-06-30 | 324K | $916K | 0.00% | +178K |
| D. E. Shaw & Co. | 2026-06-30 | 163K | $460K | 0.00% | -194K |
| Point72 Asset Management | 2026-06-30 | 107K | $302K | 0.00% | +46K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Nkarta in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Nkarta (NKTX), SEC CIK 1787400, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-14.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-05-19.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-10.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-06-18.JSON and CSV
- Company record
- EDGAR filing index for CIK 1787400Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as pharmaceutical preparations
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Datasets
Frequently Asked Questions
How much of NKTX is sold short?
3,423,724 shares were held short at the 2026-10-15 settlement, 4.9 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is NKTX's daily short volume?
On 2026-11-02, 338,800 of the 750,820 NKTX shares reported to FINRA were sold short, 45.1% of the day's reported volume. Short volume is a flow for one day, not a position.
Does NKTX have fails to deliver?
The SEC's latest file shows 103 NKTX shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are NKTX insiders buying or selling?
No open-market insider trades were reported for NKTX in the last 90 days. The most recent filings are listed below. Latest filing: HASTINGS PAUL J (Chief Executive Officer) on 2026-06-18.
Who owns 5% or more of NKTX?
No holder on file reports 5% or more of NKTX in its latest filing.
Which tracked 13F managers own NKTX?
7 of the 30 tracked 13F managers held NKTX shares at their latest filing, $19.5M in all. The largest: Ken Griffin's Citadel Advisors (2.2M shares, $6.2M), Two Sigma Investments (1.9M shares, $5.3M), Renaissance Technologies (1.2M shares, $3.3M), Cliff Asness's AQR Capital Management (1.1M shares, $3.0M), Izzy Englander's Millennium Management (324K shares, $916K), D. E. Shaw & Co. (163K shares, $460K). The table above lists all 7.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.