SUPERNUS PHARMACEUTICALS INC SUPN
COM · Common Stock · CUSIP 868459108 · ISIN US8684591089
Company in Rockville, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersRockville, MD
- Founded2005
- Websitesupernus.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 ($1.3m this quarter). Holder counts are more reliable. Shares outstanding: 58.0m as of 2026-04-28, 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 ≈ $51.65. Options: 5 managers hold calls ($3.4m notional), 6 hold puts ($5.8m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 243 |
| Q4 2022 | 263 |
| Q1 2023 | 259 |
| Q2 2023 | 249 |
| Q3 2023 | 239 |
| Q4 2023 | 246 |
| Q1 2024 | 251 |
| Q2 2024 | 245 |
| Q3 2024 | 273 |
| Q4 2024 | 294 |
| Q1 2025 | 296 |
| Q2 2025 | 296 |
| Q3 2025 | 310 |
| Q4 2025 | 333 |
| Q1 2026 | 328 |
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 | 115 | 114 |
| Q3 2024 | 126 | 114 |
| Q4 2024 | 133 | 119 |
| Q1 2025 | 143 | 127 |
| Q2 2025 | 156 | 120 |
| Q3 2025 | 151 | 158 |
| Q4 2025 | 162 | 146 |
| Q1 2026 | 152 | 157 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $677.4k | $12.6k | 0.02 |
| Q3 2025 | $11.5m | $0 | 0.00 |
| Q4 2025 | $5.9m | $5.3m | 0.91 |
| Q1 2026 | $3.4m | $5.8m | 1.71 |
Biggest buyers
| CITADEL ADVISORS LLC | Added | +1.0m |
| MILLENNIUM MANAGEMENT LLC | Added | +675.9k |
| Assenagon Asset Management S.A. | New | +530.6k |
| Woodline Partners LP | New | +449.0k |
| Freestone Grove Partners LP | Added | +445.0k |
| Sofinnova Investments, Inc. | Added | +401.2k |
| SG Americas Securities, LLC | Added | +364.4k |
| GOLDMAN SACHS GROUP INC | Added | +196.2k |
| BANK OF AMERICA CORP /DE/ | Added | +193.5k |
| Qube Research & Technologies Ltd | Added | +186.4k |
Biggest sellers
| Point72 Asset Management, L.P. | Reduced | -946.2k |
| ARMISTICE CAPITAL, LLC | Reduced | -868.7k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -405.3k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -288.5k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | -270.4k |
| Catalio Capital Management, LP | Reduced | -195.4k |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | Sold out | -193.6k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -176.1k |
| MORGAN STANLEY | Reduced | -165.6k |
| Jain Global LLC | Sold out | -123.3k |
Biggest calls
| Caption Management, LLC | Reduced | $2.3m45.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $925.3k17.9k shares |
| GROUP ONE TRADING LLC | New | $129.2k2.5k shares |
| Raiffeisen Bank International AG | Unchanged | $34.7k671 shares |
| SIMPLEX TRADING, LLC | New | $5.2k100 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.8m54.6k shares |
| CITADEL ADVISORS LLC | Added | $1.8m34.6k shares |
| JANE STREET GROUP, LLC | Added | $734.0k14.2k shares |
| SIMPLEX TRADING, LLC | New | $336.0k6.5k shares |
| Walleye Capital LLC | New | $98.2k1.9k shares |
| GROUP ONE TRADING LLC | Reduced | $62.0k1.2k 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 |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-04-22 | 14.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.7% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.0% |
Fell to 5% or below in the last year: MILLENNIUM MANAGEMENT LLC (6.6%, 2026-08-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), ARMISTICE CAPITAL, LLC (4.8%, 2026-02-17), DIMENSIONAL FUND ADVISORS LP (4.7%, 2026-01-21)
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 | — | 0 | — | — |
| Q3 2024 | 0 | — | 1 | $435.0k | — |
| Q4 2024 | 0 | — | 6 | $12.1m | $788.4k |
| Q1 2025 | 0 | — | 2 | $542.2k | $505.9k |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 6 | $15.6m | $13.9m |
| Q4 2025 | 0 | — | 4 | $7.4m | $7.3m |
| Q1 2026 | 0 | — | 7 | $9.2m | $7.4m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-03-18 | Bhatt Padmanabh P. Sr. VP of IP, CSO | Sold plan | $359.6k7.2k shares |
| 2026-03-17 | Bhatt Padmanabh P. Sr. VP of IP, CSO | Sold plan | $2.5m50.0k shares |
| 2026-03-16 | Bhatt Padmanabh P. Sr. VP of IP, CSO | Sold plan | $2.5m50.0k shares |
| 2026-03-13 | Khattar Jack A. President, CEO, director · By the KBT Trust | Sold plan | $1.8m34.9k shares |
| 2026-03-13 | Khattar Jack A. President, CEO, director | Sold plan | $6.2k120 shares |
| 2026-03-12 | Hudson Frederick M. Director | Sold | $271.7k5.4k shares |
| 2026-03-10 | Horich William Todd SVP, Commercial Operations | Sold | $244.1k4.4k shares |
| 2026-03-09 | Horich William Todd SVP, Commercial Operations | Sold | $239.7k4.4k shares |
| 2026-03-09 | Mottola Frank SVP, Chief Tech. Ops. Officer | Sold | $87.1k1.6k shares |
| 2026-03-06 | GEMAYEL GEORGES Director | Sold | $465.7k8.8k shares |
| 2026-03-05 | GEMAYEL GEORGES Director | Sold | $537.1k10.0k shares |
| 2026-02-19 | Sensenig Bethany Director | Sold plan | $228.3k4.5k 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. 0.01% of their portfolio | 8.8m $454.7m | Added +61.4k |
| MILLENNIUM MANAGEMENT LLC 0.13% of their portfolio | 3.3m $171.4m | Added +675.9k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 3.2m $167.4m | First filing |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 2.5m $127.5m | First filing |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.3m $119.2m | Reduced -405.3k |
| STATE STREET CORP 0.00% of their portfolio | 2.3m $118.3m | Added +68.9k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.18% of their portfolio | 2.0m $105.3m | Reduced -270.4k |
| ARMISTICE CAPITAL, LLC 3.23% of their portfolio | 1.9m $98.0m | Reduced -868.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.14% of their portfolio | 1.7m $88.1m | Reduced -27.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.6m $83.9m | Added +150.6k |
| CITADEL ADVISORS LLC 0.05% of their portfolio | 1.5m $77.2m | Added +1.0m |
| LOOMIS SAYLES & CO L P 0.10% of their portfolio | 1.4m $73.7m | Reduced -23.1k |
| Stephens Investment Management Group LLC 0.96% of their portfolio | 1.4m $69.9m | Reduced -55.2k |
| Point72 Asset Management, L.P. 0.12% of their portfolio | 1.3m $68.2m | Reduced -946.2k |
| GW&K Investment Management, LLC 0.48% of their portfolio | 1.1m $54.5m | Reduced -25.5k |
| Sofinnova Investments, Inc. 2.47% of their portfolio | 954.3k $49.3m | Added +401.2k |
| MORGAN STANLEY 0.00% of their portfolio | 913.9k $47.2m | Reduced -165.6k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 856.5k $44.3m | Added +196.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 714.2k $36.9m | Added +193.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 706.0k $36.5m | Added +2.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 699.5k $36.2m | Added +29.0k |
| ASHFORD CAPITAL MANAGEMENT INC 4.12% of their portfolio | 645.4k $33.4m | Added +32.8k |
| Freestone Grove Partners LP 0.24% of their portfolio | 641.3k $33.1m | Added +445.0k |
| D. E. Shaw & Co., Inc. 0.03% of their portfolio | 622.5k $32.2m | Reduced -85.5k |
| Assenagon Asset Management S.A. 0.04% of their portfolio | 530.6k $27.4m | New |
| VICTORY CAPITAL MANAGEMENT INC 0.02% of their portfolio | 502.4k $26.0m | Reduced -23.8k |
| Qube Research & Technologies Ltd 0.04% of their portfolio | 498.2k $25.8m | Added +186.4k |
| RICE HALL JAMES & ASSOCIATES, LLC 1.37% of their portfolio | 477.4k $24.7m | Added +9.5k |
| Pictet Asset Management Holding SA 0.02% of their portfolio | 450.8k $22.3m | Reduced -32.6k |
| Woodline Partners LP 0.09% of their portfolio | 449.0k $23.2m | New |
| Invesco Ltd. 0.00% of their portfolio | 412.7k $21.3m | Added +16.9k |
| SG Americas Securities, LLC 0.02% of their portfolio | 377.2k $19.5m | Added +364.4k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.45% of their portfolio | 376.1k $19.4m | Added +71.9k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 369.2k $19.1m | First filing |
| Bank of New York Mellon Corp 0.00% of their portfolio | 362.4k $18.7m | Reduced -8.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 341.1k $17.6m | Added +15.1k |
| MetLife Investment Management, LLC 0.08% of their portfolio | 304.2k $15.7m | Added +456 |
| Krensavage Asset Management, LLC 5.67% of their portfolio | 280.7k $14.5m | Reduced -32.8k |
| Aberdeen Group plc 0.02% of their portfolio | 275.6k $14.2m | Added +4.0k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 271.2k $14.0m | Added +150.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 250.7k $12.4m | Reduced -1.0k |
| ROYCE & ASSOCIATES LP 0.12% of their portfolio | 229.9k $11.9m | Added +32.2k |
| GLENMEDE TRUST CO NA 0.06% of their portfolio | 219.1k $11.3m | Reduced -20.1k |
| Nuveen, LLC 0.00% of their portfolio | 216.0k $11.2m | Added +105.3k |
| FMR LLC 0.00% of their portfolio | 209.4k $10.8m | Added +85.0k |
| UBS Group AG 0.00% of their portfolio | 209.1k $10.8m | Added +166.1k |
| Public Sector Pension Investment Board 0.03% of their portfolio | 205.2k $10.6m | Added +6.8k |
| Aristotle Capital Boston, LLC 0.65% of their portfolio | 203.1k $10.5m | Reduced -31.4k |
| ExodusPoint Capital Management, LP 0.10% of their portfolio | 202.1k $10.4m | Reduced -27.0k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 176.1k $8.7m | Reduced -13.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 173.9k $9.0m | Reduced -7.1k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 169.3k $8.7m | Added +4.9k |
| AXIOM INVESTORS LLC /DE 0.09% of their portfolio | 164.0k $8.5m | Added +57.8k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 162.4k $8.4m | Added +7.8k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 161.0k $8.3m | Reduced -4.2k |
| THIRD AVENUE MANAGEMENT LLC 1.28% of their portfolio | 152.7k $7.9m | Reduced -36.8k |
| Susquehanna Portfolio Strategies, LLC 0.11% of their portfolio | 142.2k $7.3m | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 135.8k $7.0m | Reduced -9.4k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.03% of their portfolio | 130.0k $6.7m | Reduced -893 |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 125.3k $6.5m | Added +36.3k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 118.5k $6.1m | Added +5.2k |
| Swiss National Bank 0.00% of their portfolio | 113.5k $5.9m | Added +2.9k |
| BARCLAYS PLC 0.00% of their portfolio | 109.1k $5.6m | Reduced -343 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 107.9k $5.6m | Added +6.8k |
| Bruce & Co., Inc. 1.48% of their portfolio | 100.0k $5.2m | Added +17.9k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 98.3k $5.1m | Reduced -28.0k |
| Hudson Bay Capital Management LP 0.03% of their portfolio | 90.8k $4.7m | New |
| Hennion & Walsh Asset Management, Inc. 0.15% of their portfolio | 88.5k $4.6m | Added +7.8k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 86.0k $4.4m | Reduced -5.1k |
| NATIXIS 0.02% of their portfolio | 85.2k $4.4m | New |
| Parkman Healthcare Partners LLC 0.46% of their portfolio | 85.1k $4.4m | New |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 78.1k $4.0m | Reduced -1.9k |
| PDT Partners, LLC 0.23% of their portfolio | 76.7k $4.0m | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 75.1k $3.9m | Added +43.9k |
| Man Group plc 0.01% of their portfolio | 75.0k $3.9m | Added +43.9k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 72.4k $3.7m | Reduced -8.0k |
| WEDGE CAPITAL MANAGEMENT L L P/NC 0.07% of their portfolio | 69.6k $3.6m | Reduced -8.5k |
| SIT INVESTMENT ASSOCIATES INC 0.07% of their portfolio | 68.8k $3.6m | Added +3.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 67.7k $3.5m | Added +14.3k |
| MARTINGALE ASSET MANAGEMENT L P 0.09% of their portfolio | 67.5k $3.5m | Added +9.3k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 66.0k $3.4m | New |
| Phocas Financial Corp. 0.51% of their portfolio | 63.4k $3.3m | Reduced -17.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 63.4k $3.3m | Added +10.6k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 63.4k $3.3m | Reduced -1.3k |
| Bridge City Capital, LLC 0.90% of their portfolio | 62.9k $3.3m | Reduced -878 |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 62.9k $3.3m | Reduced -10.4k |
| Catalio Capital Management, LP 0.67% of their portfolio | 62.0k $3.2m | Reduced -195.4k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 62.0k $3.2m | Reduced -15.6k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 60.5k $3.1m | Added +10.2k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 57.8k $3.0m | Reduced -30.3k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 57.3k $3.0m | Added +20.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 55.9k $2.8m | Added +1.8k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.00% of their portfolio | 52.8k $2.7m | Added +41.7k |
| NFJ INVESTMENT GROUP, LLC 0.10% of their portfolio | 52.8k $2.7m | New |
| S&T Bank/PA 1.01% of their portfolio | 52.5k $2.7m | Reduced -22.6k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 50.5k $2.6m | First filing |
| VELA Investment Management, LLC 0.66% of their portfolio | 49.3k $2.5m | Added +1.0k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 49.0k $2.5m | Added +847 |
| Schonfeld Strategic Advisors LLC 0.02% of their portfolio | 48.8k $2.5m | New |
| GREAT LAKES ADVISORS, LLC 0.02% of their portfolio | 48.2k $2.5m | Reduced -4.4k |