Two Sigma Investments, LP
· Added
Change
+1.1M
Δ Own
+110.6%
Date
Q1 2026
NK
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Two Sigma Investments, LP
· Added
Change
+1.1M
Δ Own
+110.6%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +1.1M | +110.6% | Q1 2026 | |||||
|
Blackstone Inc.
· Exited
Change
−747K
Δ Own
−100.0%
Date
Q1 2026
|
Blackstone Inc. | Exited· Q1 2026 | – | −747K | −100.0% | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−647K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −647K | −100.0% | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Added
Change
+568K
Date
Q1 2026
|
Acadian Asset Management LLC | Added· Q1 2026 | – | +568K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+439K
Δ Own
+32.6%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +439K | +32.6% | Q1 2026 | |||||
|
BlackRock
· Added
Change
+393K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +393K | – | Q1 2026 | |||||
|
AQR Capital Management LLC
· Added
Change
+277K
Date
Q1 2026
|
AQR Capital Management LLC | Added· Q1 2026 | – | +277K | – | Q1 2026 | |||||
|
Nuveen, LLC
· Added
Change
+255K
Date
Q1 2026
|
Nuveen, LLC | Added· Q1 2026 | – | +255K | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Added
Change
+174K
Δ Own
+94.7%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Added· Q1 2026 | – | +174K | +94.7% | Q1 2026 | |||||
|
Marshall Wace, LLP
· Exited
Change
−155K
Δ Own
−100.0%
Date
Q1 2026
|
Marshall Wace, LLP | Exited· Q1 2026 | – | −155K | −100.0% | Q1 2026 | |||||
|
HSBC Holdings PLC
· Reduced
Change
−149K
Date
Q1 2026
|
HSBC Holdings PLC | Reduced· Q1 2026 | – | −149K | – | Q1 2026 | |||||
|
Dimensional
· Added
Change
+148K
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | – | +148K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Reduced
Change
−123K
Date
Q1 2026
|
Jane Street Group, LLC | Reduced· Q1 2026 | – | −123K | – | Q1 2026 | |||||
|
Geode
· Added
Change
+114K
Date
Q1 2026
|
Geode | Added· Q1 2026 | – | +114K | – | Q1 2026 | |||||
|
Woodline Partners LP
· Reduced
Change
−83K
Date
Q1 2026
|
Woodline Partners LP | Reduced· Q1 2026 | – | −83K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Hastings Paul J.
· Director
Sell
−$5K
|
Hastings Paul J. | Director | Sell | $2.71 | −2K | −$5K | 390K | −0.5% | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Ra Capital Management, L.P.
· Director
Grant (A)
37K
|
Ra Capital Management, L.P. | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Behbahani Ali
· Director
Grant (A)
37K
|
Behbahani Ali | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
George Simeon
· Director
Grant (A)
37K
|
George Simeon | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Vratsanos George
· Director
Grant (A)
37K
|
Vratsanos George | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Scheiner Zachary
· Director
Grant (A)
37K
|
Scheiner Zachary | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Patterson Leone D.
· Director
Grant (A)
37K
|
Patterson Leone D. | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Dybbs Michael
· Director
Grant (A)
37K
|
Dybbs Michael | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Thedinga Angela
· Director
Grant (A)
37K
|
Thedinga Angela | Director | Grant (A) | – | 37K | – | 37K | – | Jun 10, 2026 | Jun 11, 2026 | |||||||||
|
Hastings Paul J.
· Director, Officer
Sell
−$54K
|
Hastings Paul J. | Director, Officer | Sell | $2.07 | −26K | −$54K | 390K | – | Jan 15, 2026 | Jan 20, 2026 | |||||||||
|
Mahmood Nadir
· Officer
Sell
−$12K
|
Mahmood Nadir | Officer | Sell | $2.07 | −6K | −$12K | 168K | – | Jan 15, 2026 | Jan 20, 2026 | |||||||||
|
Rose Shawn Marshall
· Officer
2 operations
209K
|
Rose Shawn Marshall | Officer | 2 operations | – | 209K | – | 139K | – | Jan 6, 2026 | Jan 8, 2026 | |||||||||
|
Mahmood Nadir
· Officer
2 operations
240K
|
Mahmood Nadir | Officer | 2 operations | – | 240K | – | 160K | – | Jan 6, 2026 | Jan 8, 2026 | |||||||||
|
Hastings Paul J.
· Director
2 operations
656K
|
Hastings Paul J. | Director | 2 operations | – | 656K | – | 562K | – | Jan 6, 2026 | Jan 8, 2026 | |||||||||
N
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103 reporting institutions disclosed NKTX position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.