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 ($231.2k this quarter). Holder counts are more reliable. Shares outstanding: 309.0m as of 2026-04-24, 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 ≈ $2.50. Options: 8 managers hold calls ($3.6m notional), 7 hold puts ($5.4m).
Trends to Q1 2026
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 |
| Q1 2026 | 252 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| 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 |
| Q1 2026 | 123 | 121 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $6.5m | $1.1m | 0.17 |
| Q3 2025 | $19.8m | $6.0m | 0.30 |
| Q4 2025 | $8.1m | $4.7m | 0.58 |
| Q1 2026 | $3.6m | $5.4m | 1.51 |
Biggest buyers
| MILLENNIUM MANAGEMENT LLC | Added | +5.9m |
| STATE STREET CORP | Added | +4.1m |
| UBS Group AG | Added | +3.2m |
| TWO SIGMA INVESTMENTS, LP | Added | +1.7m |
| Frazier Life Sciences Management, L.P. | Added | +1.7m |
| MORGAN STANLEY | Added | +1.3m |
| 180 WEALTH ADVISORS, LLC | Added | +1.3m |
| MARSHALL WACE, LLP | Added | +1.3m |
| Point72 Asset Management, L.P. | New | +1.2m |
| BANK OF AMERICA CORP /DE/ | Added | +1.0m |
Biggest sellers
| Nitorum Capital, L.P. | Sold out | -5.3m |
| Rubric Capital Management LP | Reduced | -3.9m |
| CITADEL ADVISORS LLC | Reduced | -2.4m |
| Avoro Capital Advisors LLC | Reduced | -2.2m |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Sold out | -1.9m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Sold out | -1.9m |
| Eversept Partners, LP | Sold out | -1.9m |
| EcoR1 Capital, LLC | Sold out | -1.7m |
| Apis Capital Advisors, LLC | Sold out | -1.2m |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -1.2m |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.3m510.7k shares |
| Stonepine Capital Management, LLC | New | $1.2m500.0k shares |
| SIMPLEX TRADING, LLC | Added | $340.3k138.9k shares |
| CITADEL ADVISORS LLC | Reduced | $312.1k127.4k shares |
| JANE STREET GROUP, LLC | Added | $238.4k97.3k shares |
| GROUP ONE TRADING LLC | Reduced | $180.1k73.5k shares |
| IMC-Chicago, LLC | Reduced | $70.6k28.8k shares |
| JPMORGAN CHASE & CO | New | $237100 shares |
Biggest puts
| Caption Management, LLC | New | $2.5m1.0m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.3m516.7k shares |
| CITADEL ADVISORS LLC | Added | $755.1k308.2k shares |
| SIMPLEX TRADING, LLC | Added | $406.2k165.8k shares |
| GROUP ONE TRADING LLC | Added | $354.0k144.5k shares |
| JANE STREET GROUP, LLC | New | $165.1k67.4k shares |
| IMC-Chicago, LLC | New | $49.7k20.3k 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 Q1 2026
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 |
|---|---|---|---|---|---|
| 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 |
| Q1 2026 | 1 | $259.0k | 1 | $297.5k | $297.5k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-03-10 | Castagna Michael Chief Executive Officer, director | Bought | $259.0k100.0k shares |
| 2026-01-08 | Tross Stuart A Chief People & Workpl Officer | Sold plan | $297.5k47.0k 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, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 28.6m $70.1m | Reduced -348.5k |
| STATE STREET CORP 0.00% of their portfolio | 18.7m $45.8m | Added +4.1m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 12.9m $31.6m | First filing |
| UBS Group AG 0.00% of their portfolio | 8.3m $20.2m | Added +3.2m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 7.5m $18.4m | Added +131.0k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 6.4m $15.7m | Added +5.9m |
| Frazier Life Sciences Management, L.P. 0.37% of their portfolio | 5.9m $14.5m | Added +1.7m |
| MORGAN STANLEY 0.00% of their portfolio | 5.8m $14.2m | Added +1.3m |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 5.0m $12.1m | Added +509.7k |
| 180 WEALTH ADVISORS, LLC 1.20% of their portfolio | 4.3m $10.5m | Added +1.3m |
| Rubric Capital Management LP 0.11% of their portfolio | 3.6m $8.9m | Reduced -3.9m |
| FMR LLC 0.00% of their portfolio | 3.5m $8.5m | Reduced -96.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 3.4m $8.3m | Added +1.0m |
| TSP Capital Management Group, LLC 2.00% of their portfolio | 3.3m $8.2m | Added +380.8k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 3.3m $8.0m | Reduced -21.8k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 3.2m $7.8m | First filing |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 2.9m $7.2m | Added +1.0m |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 2.9m $7.1m | Added +1.7m |
| NORTHERN TRUST CORP 0.00% of their portfolio | 2.7m $6.6m | Added +46.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 2.5m $6.2m | Reduced -15.5k |
| Avoro Capital Advisors LLC 0.05% of their portfolio | 2.2m $5.4m | Reduced -2.2m |
| Nuveen, LLC 0.00% of their portfolio | 2.2m $5.3m | Added +2.5k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 2.1m $5.3m | Added +318.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 2.1m $5.2m | First filing |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 1.9m $4.6m | Added +111.0k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 1.6m $3.8m | Added +1.3m |
| Invesco Ltd. 0.00% of their portfolio | 1.5m $3.7m | Reduced -75.2k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 1.2m $3.1m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 1.2m $3.0m | Added +143.6k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 1.2m $3.0m | Added +826.4k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 1.2m $2.9m | Reduced -2.4m |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 869.3k $2.1m | Added +282.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 860.5k $2.1m | Reduced -388.1k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 845.5k $2.1m | Reduced -28.0k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio | 827.9k $2.0m | Unchanged |
| Empowered Funds, LLC 0.01% of their portfolio | 765.4k $1.9m | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 726.4k $1.8m | Added +253.5k |
| Woodline Partners LP 0.01% of their portfolio | 719.1k $1.8m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 715.9k $1.8m | Reduced -1.2m |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 698.1k $1.7m | Added +265.4k |
| SCOPIA CAPITAL MANAGEMENT LP 1.18% of their portfolio | 695.0k $1.7m | Unchanged |
| Jefferies Financial Group Inc. 0.02% of their portfolio | 691.7k $1.7m | Added +625.4k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 610.5k $1.5m | Reduced -232.5k |
| Rafferty Asset Management, LLC 0.01% of their portfolio | 581.5k $1.4m | Added +129.1k |
| Swiss National Bank 0.00% of their portfolio | 574.7k $1.4m | Unchanged |
| 1492 Capital Management LLC 0.51% of their portfolio | 549.8k $1.3m | Added +14.5k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.00% of their portfolio | 547.1k $1.3m | Reduced -160.1k |
| Apollo Management Holdings, L.P. 0.02% of their portfolio | 484.0k $1.2m | Reduced -180.1k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 481.5k $1.2m | Added +106.0k |
| Man Group plc 0.00% of their portfolio | 474.6k $1.2m | Added +296.1k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 453.0k $1.1m | Reduced -186.3k |
| CenterBook Partners LP 0.06% of their portfolio | 431.0k $1.1m | New |
| DELTEC ASSET MANAGEMENT LLC 0.19% of their portfolio | 428.0k $1.0m | Reduced -546.7k |
| Caption Management, LLC 0.05% of their portfolio | 410.0k $1.0m | New |
| Aquatic Capital Management LLC 0.03% of their portfolio | 401.4k $983.4k | Added +179.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 379.7k $930.3k | Added +124.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 379.6k $931.0k | Added +72.5k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 373.3k $914.5k | Reduced -8.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 352.3k $863.0k | Added +18.4k |
| DRW Securities, LLC 0.04% of their portfolio | 305.1k $747.5k | Added +283.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 283.0k $1.6m | Added +4.2k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 259.7k $615.4k | Reduced -262.5k |
| PROFUND ADVISORS LLC 0.02% of their portfolio | 258.9k $634.4k | Added +89.9k |
| ALPS ADVISORS INC 0.00% of their portfolio | 250.8k $614.5k | New |
| BARCLAYS PLC 0.00% of their portfolio | 240.8k $590.0k | Reduced -784.6k |
| Aaron Wealth Advisors LLC 0.03% of their portfolio | 235.7k $577.3k | Added +34.9k |
| Freestone Grove Partners LP 0.00% of their portfolio | 231.8k $567.9k | Added +217.7k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 229.6k $559.3k | Added +25.5k |
| Legal & General Group Plc 0.00% of their portfolio | 229.0k $561.1k | Reduced -65.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 216.6k $531.0k | Added +10.0k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 212.0k $508.9k | Added +69.9k |
| Mariner, LLC 0.00% of their portfolio | 211.5k $518.1k | Added +2.0k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 206.5k $506.0k | Added +11.5k |
| Voleon Capital Management LP 0.01% of their portfolio | 201.7k $494.2k | Reduced -68.1k |
| Jump Financial, LLC 0.01% of their portfolio | 197.5k $484.0k | Added +160.3k |
| Bruce & Co., Inc. 0.14% of their portfolio | 195.1k $477.9k | Unchanged |
| DIADEMA PARTNERS LP 0.19% of their portfolio | 186.6k $457.2k | Reduced -115.4k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 181.9k $445.8k | First filing |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 181.0k $443.3k | Added +75.0k |
| ZACKS INVESTMENT MANAGEMENT 0.00% of their portfolio | 180.3k $441.7k | New |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 163.0k $399.3k | Reduced -295 |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.00% of their portfolio | 161.3k $395.0k | Unchanged |
| Graham Capital Management, L.P. 0.01% of their portfolio | 161.2k $394.9k | Added +134.6k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 159.3k $390.2k | Reduced -2.7k |
| TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio | 156.8k $384.2k | Added +124.7k |
| SG Americas Securities, LLC 0.00% of their portfolio | 155.2k $380.0k | Added +11.6k |
| SIMPLEX TRADING, LLC 0.01% of their portfolio | 152.5k $373.6k | Added +37.3k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 150.4k $367.0k | Added +33.5k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 143.2k $350.9k | Reduced -11.0k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.00% of their portfolio | 138.6k $339.6k | Added +35.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 137.5k $336.8k | Reduced -3.0k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 127.9k $313.3k | Reduced -450.5k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 127.8k $313.7k | Unchanged |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 119.7k $293.2k | First filing |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 112.9k $276.5k | Reduced -132.4k |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 110.6k $271.1k | Reduced -12.0k |
| Creative Planning 0.00% of their portfolio | 108.8k $266.6k | Reduced -62.9k |
| State of New Jersey Common Pension Fund D 0.00% of their portfolio | 99.6k $244.1k | New |
| CITIGROUP INC 0.00% of their portfolio | 96.5k $236.4k | Added +23.2k |
| OP Asset Management Ltd 0.00% of their portfolio | 86.5k $211.9k | Added +50.8k |