MANNKIND CORP MNKD
COM NEW · Common Stock · CUSIP 56400P706 · ISIN US56400P7069
Biopharmaceutical company
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersDanbury, CT
- Founded1991
- Websitemannkindcorp.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.7m this quarter). Holder counts are more reliable. Shares outstanding: 308.1m as of 2026-02-13, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $5.76. Options: 9 managers hold calls ($8.1m notional), 4 hold puts ($4.7m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 176 |
| Q4 2022 | 191 |
| Q1 2023 | 188 |
| Q2 2023 | 186 |
| Q3 2023 | 196 |
| Q4 2023 | 201 |
| Q1 2024 | 204 |
| Q2 2024 | 211 |
| Q3 2024 | 232 |
| Q4 2024 | 244 |
| Q1 2025 | 258 |
| Q2 2025 | 234 |
| Q3 2025 | 234 |
| Q4 2025 | 259 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 93 | 92 |
| Q2 2024 | 95 | 85 |
| Q3 2024 | 118 | 69 |
| Q4 2024 | 123 | 76 |
| Q1 2025 | 119 | 97 |
| Q2 2025 | 98 | 119 |
| Q3 2025 | 109 | 122 |
| Q4 2025 | 131 | 91 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $9.0m | $1.6m | 0.17 |
| Q2 2025 | $6.5m | $1.1m | 0.17 |
| Q3 2025 | $19.8m | $6.0m | 0.30 |
| Q4 2025 | $8.1m | $4.7m | 0.58 |
Biggest buyers
| Frazier Life Sciences Management, L.P. | New | +4.2m |
| STATE STREET CORP | Added | +3.9m |
| TSP Capital Management Group, LLC | New | +3.0m |
| CITADEL ADVISORS LLC | Added | +2.3m |
| EcoR1 Capital, LLC | New | +1.7m |
| Apis Capital Advisors, LLC | New | +1.2m |
| RENAISSANCE TECHNOLOGIES LLC | Added | +906.7k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | New | +707.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +676.8k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +626.9k |
Biggest sellers
| Rubric Capital Management LP | Reduced | -3.9m |
| JPMORGAN CHASE & CO | Reduced | -3.6m |
| TSP Capital Management Group, LLC | Sold out | -3.0m |
| Connor, Clark & Lunn Investment Management Ltd. | Sold out | -1.5m |
| TWO SIGMA ADVISERS, LP | Reduced | -1.3m |
| Squarepoint Ops LLC | Reduced | -1.3m |
| Nitorum Capital, L.P. | Reduced | -1.2m |
| TWO SIGMA INVESTMENTS, LP | Reduced | -821.8k |
| Qube Research & Technologies Ltd | Reduced | -769.0k |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | -703.5k |
Biggest calls
| DIADEMA PARTNERS LP | Reduced | $3.1m552.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.5m267.9k shares |
| GROUP ONE TRADING LLC | Reduced | $1.5m258.0k shares |
| CITADEL ADVISORS LLC | Reduced | $725.8k128.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $649.8k114.6k shares |
| JANE STREET GROUP, LLC | Reduced | $353.2k62.3k shares |
| IMC-Chicago, LLC | Reduced | $226.2k39.9k shares |
| Persistent Asset Partners Ltd | Reduced | $8.9k1.5k shares |
| NEW WAVE WEALTH ADVISORS LLC | New | $2.2k700 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.2m395.9k shares |
| CITADEL ADVISORS LLC | Added | $1.3m230.4k shares |
| SIMPLEX TRADING, LLC | Reduced | $754.1k133.0k shares |
| GROUP ONE TRADING LLC | Reduced | $396.9k70.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| STATE STREET CORP 13G · institution new · filed 2026-05-12 | 6.1% |
| Rubric Capital Management LP 13G · institution new · filed 2026-08-14 | 5.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.0% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 2 | $259.3k | $259.3k |
| Q3 2024 | 0 | — | 4 | $1.3m | $760.9k |
| Q4 2024 | 0 | — | 2 | $1.3m | $1.3m |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 2 | $846.3k | $846.3k |
| Q3 2025 | 0 | — | 3 | $577.3k | $577.3k |
| Q4 2025 | 0 | — | 3 | $2.2m | $2.2m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-12-17 | Castagna Michael Chief Executive Officer, director | Sold plan | $395.5k65.8k shares |
| 2025-12-16 | Castagna Michael Chief Executive Officer, director | Sold plan | $127.9k21.3k shares |
| 2025-12-12 | Castagna Michael Chief Executive Officer, director | Sold plan | $124.8k20.8k shares |
| 2025-12-02 | Thomson David EVP Genl Counsel & Secretary | Sold plan | $823.1k147.8k shares |
| 2025-12-02 | Castagna Michael Chief Executive Officer, director | Sold plan | $601.1k107.9k shares |
| 2025-11-14 | Singh Sanjay R EVP Technical Operations | Sold plan | $94.4k18.8k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 28.9m $164.1m | Added +239.4k |
| VANGUARD GROUP INC 0.00% of their portfolio | 17.9m $101.4m | Added +250.3k |
| STATE STREET CORP 0.00% of their portfolio | 14.6m $82.9m | Added +3.9m |
| Rubric Capital Management LP 0.51% of their portfolio | 7.5m $42.4m | Reduced -3.9m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 7.4m $41.8m | Reduced -11.4k |
| Nitorum Capital, L.P. 6.68% of their portfolio | 5.3m $30.2m | Reduced -1.2m |
| UBS Group AG 0.01% of their portfolio | 5.1m $28.9m | Reduced -91.6k |
| Avoro Capital Advisors LLC 0.25% of their portfolio | 4.4m $25.2m | Reduced -24.4k |
| MORGAN STANLEY 0.00% of their portfolio | 4.4m $25.2m | Added +593.5k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 4.4m $25.2m | Added +426.9k |
| Frazier Life Sciences Management, L.P. 0.64% of their portfolio | 4.2m $24.0m | New |
| FMR LLC 0.00% of their portfolio | 3.6m $20.3m | Added +258.8k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 3.6m $20.3m | Added +2.3m |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 3.3m $18.7m | Reduced -162.7k |
| TSP Capital Management Group, LLC 4.11% of their portfolio | 3.0m $16.8m | New |
| 180 WEALTH ADVISORS, LLC 1.91% of their portfolio | 3.0m $16.8m | Added +86.7k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 2.6m $14.9m | Reduced -145.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 2.6m $14.5m | Reduced -13.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 2.4m $13.4m | Reduced -585.3k |
| Nuveen, LLC 0.00% of their portfolio | 2.2m $12.3m | Reduced -469.6k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.9m $10.9m | Reduced -27.9k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.02% of their portfolio | 1.9m $10.7m | Added +200.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 1.9m $10.7m | Added +676.8k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.04% of their portfolio | 1.9m $10.6m | Added +626.9k |
| Eversept Partners, LP 0.59% of their portfolio | 1.9m $10.5m | Reduced -190.2k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 1.8m $10.4m | Reduced -769.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 1.8m $10.0m | Added +906.7k |
| EcoR1 Capital, LLC 0.43% of their portfolio | 1.7m $9.4m | New |
| Invesco Ltd. 0.00% of their portfolio | 1.6m $9.0m | Reduced -55.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 1.2m $7.1m | Reduced -291.1k |
| Apis Capital Advisors, LLC 1.19% of their portfolio | 1.2m $6.8m | New |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 1.2m $6.7m | Reduced -821.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 1.1m $6.2m | Added +587.2k |
| AXIOM INVESTORS LLC /DE 0.05% of their portfolio | 1.0m $5.9m | Added +138.3k |
| BARCLAYS PLC 0.00% of their portfolio | 1.0m $5.8m | Added +179.4k |
| DELTEC ASSET MANAGEMENT LLC 0.92% of their portfolio | 974.7k $5.5m | Added +251.2k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.02% of their portfolio | 894.2k $5.1m | Reduced -703.5k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 873.5k $5.0m | Reduced -20.8k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 843.0k $4.8m | Added +365.8k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio | 827.9k $4.7m | Added +342.8k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 707.1k $4.0m | New |
| SCOPIA CAPITAL MANAGEMENT LP 0.83% of their portfolio | 695.0k $3.9m | Unchanged |
| Apollo Management Holdings, L.P. 0.04% of their portfolio | 664.1k $3.8m | Unchanged |
| Parkman Healthcare Partners LLC 0.35% of their portfolio | 640.4k $3.6m | Reduced -15.7k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 639.2k $3.6m | Reduced -97.4k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 587.2k $3.3m | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 578.4k $3.3m | Added +144.6k |
| Swiss National Bank 0.00% of their portfolio | 574.7k $3.3m | Added +14.8k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 553.8k $3.1m | Reduced -303.2k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 548.3k $3.1m | Added +173.0k |
| 1492 Capital Management LLC 1.16% of their portfolio | 535.3k $3.0m | Added +31.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 522.2k $3.0m | Reduced -3.6m |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 512.7k $2.9m | Reduced -73.8k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 511.0k $2.9m | Reduced -1.3m |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 484.2k $2.7m | Added +310.9k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 472.9k $2.7m | Added +370.6k |
| Rafferty Asset Management, LLC 0.01% of their portfolio | 452.5k $2.6m | Added +243.0k |
| Trexquant Investment LP 0.02% of their portfolio | 446.9k $2.5m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 432.8k $2.5m | Reduced -125.5k |
| Squarepoint Ops LLC 0.00% of their portfolio | 427.1k $2.4m | Reduced -1.3m |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 405.7k $2.3m | Reduced -6.7k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 381.4k $2.2m | Reduced -60.4k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 375.6k $2.1m | Reduced -223.6k |
| Calamos Advisors LLC 0.01% of their portfolio | 370.7k $2.1m | Added +139.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 333.8k $1.9m | Added +101.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 307.2k $1.7m | Added +39.2k |
| DIADEMA PARTNERS LP 1.02% of their portfolio | 302.0k $1.7m | Added +89.5k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 300.5k $1.7m | New |
| Legal & General Group Plc 0.00% of their portfolio | 294.0k $1.7m | Reduced -25.2k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 278.9k $1.6m | Reduced -241 |
| Voleon Capital Management LP 0.03% of their portfolio | 269.8k $1.5m | Added +32.6k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 264.3k $1.5m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 255.6k $1.4m | Reduced -1.1k |
| ExodusPoint Capital Management, LP 0.02% of their portfolio | 245.3k $1.4m | New |
| Y-Intercept (Hong Kong) Ltd 0.03% of their portfolio | 238.7k $1.4m | New |
| Aquatic Capital Management LLC 0.04% of their portfolio | 222.2k $1.3m | Added +167.1k |
| Mariner, LLC 0.00% of their portfolio | 209.5k $1.2m | Added +2.8k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 206.6k $1.2m | Added +4.2k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 204.1k $1.2m | Added +16.4k |
| Aaron Wealth Advisors LLC 0.06% of their portfolio | 200.8k $1.1m | Added +2.4k |
| Bruce & Co., Inc. 0.34% of their portfolio | 195.1k $1.1m | Unchanged |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 195.0k $1.1m | Added +82.5k |
| Man Group plc 0.00% of their portfolio | 178.5k $1.0m | Added +79.8k |
| Creative Planning 0.00% of their portfolio | 171.8k $973.9k | Reduced -7.8k |
| PROFUND ADVISORS LLC 0.03% of their portfolio | 169.0k $958.2k | Added +120.2k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 163.3k $925.8k | Added +1.1k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 162.0k $918.3k | Reduced -9.8k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.01% of their portfolio | 161.3k $915.0k | Unchanged |
| MetLife Investment Management, LLC 0.00% of their portfolio | 154.3k $874.6k | Reduced -16.8k |
| SG Americas Securities, LLC 0.00% of their portfolio | 143.6k $814.0k | Added +63.7k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 142.1k $810.2k | Added +112.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 140.4k $796.3k | Reduced -8.8k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 127.8k $723.8k | Unchanged |
| INTECH INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 127.4k $722.1k | Unchanged |
| Brevan Howard Capital Management LP 0.01% of their portfolio | 122.6k $695.2k | New |
| Walleye Capital LLC 0.00% of their portfolio | 121.1k $686.9k | New |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 117.0k $661.0k | New |
| SIMPLEX TRADING, LLC 0.02% of their portfolio | 115.2k $653.1k | Added +2.1k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 106.4k $590.7k | Reduced -62.3k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 105.9k $600.7k | Added +3.8k |