MannKind Corporation
MannKind Corporation (MNKD) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MNKD · as of Mar 31, 2025
Ownership Breakdown
266
Institutional Holders
▲ 10 vs Q4
$888.34M
Total Inst. Value
▼ $192.56M vs Q4
308.95M
Shares Outstanding
freeFloat 98.10%
176.61M
13F Shares Held
▲ 8.50M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MNKD largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. pharmaceutical preparations | 24.49M | 8.07% | 8.07% | $123.17B | May 2, 2025 | ▲ 493.4K |
VANGUARD GROUP INC pharmaceutical preparations | 17.32M | 5.71% | 5.71% | $87.13B | May 9, 2025 | ▲ 1.26M |
STATE STREET CORP pharmaceutical preparations | 9.47M | 3.12% | 3.12% | $47.63B | May 15, 2025 | ▼ 477.8K |
AVORO CAPITAL ADVISORS LLC pharmaceutical preparations | 8.75M | 2.88% | 2.88% | $44.01B | May 15, 2025 | — held |
NITORUM CAPITAL, L.P. pharmaceutical preparations | 7.79M | 2.57% | 2.57% | $39.16B | May 15, 2025 | ▼ 961.6K |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 6.79M | 2.24% | 2.24% | $34.14B | May 13, 2025 | ▲ 411.8K |
UBS GROUP AG pharmaceutical preparations | 6.56M | 2.16% | 2.16% | $33.00B | May 13, 2025 | ▲ 3.26M |
MILLENNIUM MANAGEMENT LLC pharmaceutical preparations | 5.82M | 1.92% | 1.92% | $29.29B | May 15, 2025 | ▲ 2.38M |
FMR LLC pharmaceutical preparations | 4.26M | 1.40% | 1.40% | $21.43B | May 12, 2025 | ▼ 215.9K |
BANK OF AMERICA CORP /DE/ pharmaceutical preparations | 3.90M | 1.29% | 1.29% | $19.63B | May 15, 2025 | ▲ 537.9K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
26
Increased
+16.35M shares2
New Positions
first time holders19
Decreased
−7.58M shares0
Sold Out
fully exitedNet shares change (top 50)
+8.77M
+16.35M / −7.58M
Net new holders
+9
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MNKD insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
14
Buy transactions
7
Sell transactions
2.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Consiglio Ronald J director | May 20, 2026 | Award | 10,000 | $2.95 | $29.5K | 132.3K | Form 4 ↗ |
Tross Stuart A Chief People & Workpl Officer | May 20, 2026 | Award | 33,898 | $2.95 | $100.0K | 1.03M | Form 4 ↗ |
Marasco Dominic Pres, Endocrine Business Unit | May 20, 2026 | Award | 8,474 | $2.95 | $25.0K | 344.2K | Form 4 ↗ |
Tross Stuart A Chief People & Workpl Officer | May 11, 2026 | Tax Withhold | 8,073 | $3.52 | $28.4K | 992.2K | Form 4 ↗ |
Binder Steven B. director | May 11, 2026 | Tax Withhold | 5,560 | $3.52 | $19.6K | 824.9K | Form 4 ↗ |
Binder Steven B. director | May 12, 2026 | Sale | 16,940 | $3.29 | $55.7K | 808.0K | Form 4 ↗ |
Castagna Michael Chief Executive Officer | May 11, 2026 | Tax Withhold | 34,957 | $3.52 | $123.0K | 2.44M | Form 4 ↗ |
Thomson David EVP Genl Counsel & Secretary | May 11, 2026 | Tax Withhold | 12,387 | $3.52 | $43.6K | 829.3K | Form 4 ↗ |
Thomson David EVP Genl Counsel & Secretary | May 12, 2026 | Sale | 3,033 | $3.29 | $10.0K | 826.3K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
MannKind Corporation (MNKD) is primarily owned by institutional investors, who hold approximately 57.2% of total shares outstanding. Company insiders own approximately 1.90%, while retail and public investors account for the remaining 40.93%.
The largest institutional shareholder of MannKind Corporation is BLACKROCK, INC., holding approximately 24.49 million shares — equal to 8.07% of outstanding shares — as of March 31, 2025.
A total of 266 institutional investors currently hold MNKD stock, with a combined institutional value of approximately $888,338,512 as of the most recent 13F filing period.
Frequently asked questions
MNKD ownershipMannKind Corporation (MNKD) is primarily owned by institutional investors, who hold approximately 57.2% of shares. The largest shareholder is BLACKROCK, INC. with a 8.07% stake. Company insiders hold 1.90%. Data sourced from SEC Form 13F as of March 31, 2025.