Nitorum Capital, L.P.
· Exited
Change
−5.3M
Δ Own
−100.0%
Date
Q1 2026
MN
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Nitorum Capital, L.P.
· Exited
Change
−5.3M
Δ Own
−100.0%
Date
Q1 2026
|
Nitorum Capital, L.P. | Exited· Q1 2026 | – | −5.3M | −100.0% | Q1 2026 | |||||
|
Rubric Capital Management LP
· Reduced
Change
−3.9M
Date
Q1 2026
|
Rubric Capital Management LP | Reduced· Q1 2026 | – | −3.9M | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
Change
−2.4M
Δ Own
−66.7%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | – | −2.4M | −66.7% | Q1 2026 | |||||
|
Avoro Capital Advisors LLC
· Reduced
Change
−2.2M
Date
Q1 2026
|
Avoro Capital Advisors LLC | Reduced· Q1 2026 | – | −2.2M | – | Q1 2026 | |||||
|
Adage Capital Partners Gp, L.L.C.
· Exited
Change
−1.9M
Δ Own
−100.0%
Date
Q1 2026
|
Adage Capital Partners Gp, L.L.C. | Exited· Q1 2026 | – | −1.9M | −100.0% | Q1 2026 | |||||
|
Voloridge Investment Management, LLC
· Exited
Change
−1.9M
Δ Own
−100.0%
Date
Q1 2026
|
Voloridge Investment Management, LLC | Exited· Q1 2026 | – | −1.9M | −100.0% | Q1 2026 | |||||
|
Eversept Partners, LP
· Exited
Change
−1.9M
Δ Own
−100.0%
Date
Q1 2026
|
Eversept Partners, LP | Exited· Q1 2026 | – | −1.9M | −100.0% | Q1 2026 | |||||
|
Ecor1 Capital, LLC
· Exited
Change
−1.7M
Δ Own
−100.0%
Date
Q1 2026
|
Ecor1 Capital, LLC | Exited· Q1 2026 | – | −1.7M | −100.0% | Q1 2026 | |||||
|
Apis Capital Advisors, LLC
· Exited
Change
−1.2M
Δ Own
−100.0%
Date
Q1 2026
|
Apis Capital Advisors, LLC | Exited· Q1 2026 | – | −1.2M | −100.0% | Q1 2026 | |||||
|
Susquehanna International Group, LLP
· Reduced
Change
−1.2M
Date
Q1 2026
|
Susquehanna International Group, LLP | Reduced· Q1 2026 | – | −1.2M | – | Q1 2026 | |||||
|
Axiom Investors LLC
· Exited
Change
−1.0M
Δ Own
−100.0%
Date
Q1 2026
|
Axiom Investors LLC | Exited· Q1 2026 | – | −1.0M | −100.0% | Q1 2026 | |||||
|
Jacobs Levy Equity Management, Inc
· Reduced
Change
−851K
Date
Q1 2026
|
Jacobs Levy Equity Management, Inc | Reduced· Q1 2026 | – | −851K | – | Q1 2026 | |||||
|
Barclays PLC
· Reduced
Change
−785K
Date
Q1 2026
|
Barclays PLC | Reduced· Q1 2026 | – | −785K | – | Q1 2026 | |||||
|
Parkman Healthcare Partners LLC
· Exited
Change
−640K
Δ Own
−100.0%
Date
Q1 2026
|
Parkman Healthcare Partners LLC | Exited· Q1 2026 | – | −640K | −100.0% | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Exited
Change
−554K
Δ Own
−100.0%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Exited· Q1 2026 | – | −554K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Thomson David
· Officer
Sell
−$98K
|
Thomson David | Officer | Sell | $4.05 | −24K | −$98K | 798K | −2.9% | Jul 17, 2026 | Jul 17, 2026 | |||||||||
|
Binder Steven B.
· Director
Sell
−$213K
|
Binder Steven B. | Director | Sell | $4.06 | −52K | −$213K | 825K | −6.0% | Jul 17, 2026 | Jul 17, 2026 | |||||||||
|
Prentiss Christopher B.
· Officer
2 operations
-$91K
|
Prentiss Christopher B. | Officer | 2 operations | $4.09 | -22K | -$91K | 319K | −6.5% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Marasco Dominic
· Officer
Tax withholding or exercise payment (F)
-$15K
|
Marasco Dominic | Officer | Tax withholding or exercise payment (F) | $4.09 | -4K | -$15K | 343K | −1.0% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Tross Stuart A.
· Officer
2 operations
0
|
Tross Stuart A. | Officer | 2 operations | – | 0 | – | 0 | – | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Tross Stuart A.
· Officer
4 operations
-$269K
|
Tross Stuart A. | Officer | 4 operations | $4.09 | -66K | -$269K | 1.1M | −5.9% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Castagna Michael
· Director
2 operations
0
|
Castagna Michael | Director | 2 operations | – | 0 | – | 0 | – | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Castagna Michael
· Director
4 operations
-$1.5M
|
Castagna Michael | Director | 4 operations | $4.09 | -363K | -$1.5M | 2.4M | −13.0% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Singh Sanjay R.
· Officer
2 operations
0
|
Singh Sanjay R. | Officer | 2 operations | – | 0 | – | 0 | – | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Singh Sanjay R.
· Officer
4 operations
-$191K
|
Singh Sanjay R. | Officer | 4 operations | $4.09 | -47K | -$191K | 479K | −8.9% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Thomson David
· Officer
2 operations
0
|
Thomson David | Officer | 2 operations | – | 0 | – | 0 | – | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Thomson David
· Officer
4 operations
-$403K
|
Thomson David | Officer | 4 operations | $4.09 | -98K | -$403K | 822K | −10.7% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Binder Steven B.
· Director
2 operations
0
|
Binder Steven B. | Director | 2 operations | – | 0 | – | 0 | – | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Binder Steven B.
· Director
3 operations
-$100K
|
Binder Steven B. | Director | 3 operations | $4.09 | -24K | -$100K | 877K | −2.7% | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Friedman Michael A.
· Director
Grant (A)
83K
|
Friedman Michael A. | Director | Grant (A) | – | 83K | – | 83K | – | May 20, 2026 | May 22, 2026 | |||||||||
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241 reporting institutions disclosed MNKD 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.