Comparable stake leader
BlackRock, Inc.
SEC ownership of Nkarta, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001787400.
Disclosed value leader
RA CAPITAL MANAGEMENT, L.P.
Comparable rows
50/50
Latest evidence
19 May 2026
- Public ticker
- NKTX on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
19 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001787400
- Issuer location
- South San Francisco, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Nkarta, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
RA CAPITAL MANAGEMENT, L.P.
Comparable rows
50/50
Latest evidence
19 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 5%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 5%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
5%
New Enterprise Associates 15, L.P.
4.9%
Samsara BioCapital, L.P.
4.9%
CITADEL ADVISORS LLC
4.1%
LSP 6 Holding C.V.
4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
5%
from 13D/G
|
$9,512,878
4,508,473 shares
|
— | 31 Mar 2026 |
| New Enterprise Associates 15, L.P. |
13D/G
|
4.9%
|
$10,420,841
3,568,781 shares
|
$0 | 19 May 2026 |
| Samsara BioCapital, L.P. |
13D/G
|
4.9%
|
$8,383,322
3,507,666 shares
|
$0 | 20 Nov 2025 |
| CITADEL ADVISORS LLC |
13D/G
13F
Kenneth Griffin · Company
|
4.1%
|
$6,003,741
2,900,358 shares
|
$0 | 30 Sep 2025 |
| LSP 6 Holding C.V. |
13D/G
LSP 6 Management B.V.
|
4%
|
$5,985,097
2,836,539 shares
|
$0 | 12 Feb 2025 |
| TANG CAPITAL MANAGEMENT LLC |
13F
13D/G
Company
|
2.1%
from 13D/G
|
$3,124,537
1,480,823 shares
|
— | 31 Mar 2026 |
| Commodore Capital LP |
13D/G
|
0.5%
|
$742,399
351,848 shares
|
$0 | 31 Dec 2024 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
3/4/5
Company · Director, 10%+ Owner
|
15%
|
$22,798,822
10,805,129 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$70,422.
Buys
$0
Insiders: 0
Sells
$70,422
Insiders: 2
Net
-$70,422
Shares: -33,471
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 33,471
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 1,776 | $0 | $4,813 | -$4,813 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 31,695 | $0 | $65,609 | -$65,609 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 24 reporting-owner rows connected to Nkarta, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
24
Largest Forms 3/4/5 holder
Paul J. Hastings
Net 12M change
-$70,421
Latest report
18 Jun 2026
Recent insider transactions for Nkarta, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Paul J. Hastings | NKTX | Common Stock | Sale | -0.45% | $4,813 | $2.71 | -1,776 | 390,247 | 18 Jun 2026 | Direct |
| RA CAPITAL MANAGEMENT, L.P. | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | See Footnotes | |||
| RA CAPITAL MANAGEMENT, L.P. | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | See Footnotes | |||
| Ra Capital Management, L.P. | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | See Footnotes | |||
| Ra Capital Management, L.P. | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | See Footnotes | |||
| Ra Capital Management, L.P. | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | See Footnotes | |||
| Ali Behbahani | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| Simeon George | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| George Vratsanos | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| Zachary Scheiner | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| Leone D. Patterson | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| Michael Dybbs | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| Angela Thedinga | NKTX | Stock Option (right to buy) | Award | 37,000 | 37,000 | 10 Jun 2026 | Direct | |||
| Paul J. Hastings | NKTX | Common Stock | Sale | -6.26% | $53,915 | $2.07 | -26,046 | 390,023 | 15 Jan 2026 | Direct |
| Nadir Mahmood | NKTX | Common Stock | Sale | -3.26% | $11,693 | $2.07 | -5,649 | 167,727 | 15 Jan 2026 | Direct |
| Shawn Marshall Rose | NKTX | Common Stock | Award | 70,000 | 70,000 | 06 Jan 2026 | Direct | |||
| Shawn Marshall Rose | NKTX | Stock Option (right to buy) | Award | 139,000 | 139,000 | 06 Jan 2026 | Direct | |||
| Nadir Mahmood | NKTX | Common Stock | Award | 85.7% | 80,000 | 173,376 | 06 Jan 2026 | Direct | ||
| Nadir Mahmood | NKTX | Stock Option (right to buy) | Award | 160,000 | 160,000 | 06 Jan 2026 | Direct | |||
| Paul J. Hastings | NKTX | Common Stock | Award | 29.2% | 94,000 | 416,069 | 06 Jan 2026 | Direct | ||
| Paul J. Hastings | NKTX | Stock Option (right to buy) | Award | 562,000 | 562,000 | 06 Jan 2026 | Direct |
* marks a reported price that did not pass the local price check.