Supernus Pharmaceuticals
SUPN · NASDAQ
$41.23+$1.39 (+3.49%)TodayMarket closed ·
Prev close $39.84
Who owns SUPN
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 54.0% of SUPN’s shares.
- BlackRock Institutional Trust Company, N.A.14.3%
- Millennium Management LLC6.6%
- Vanguard Portfolio Management, LLC5.7%
- Armistice Capital LLC4.6%
- Next 6 largest institutions22.8%
- All other shareholders46.0%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 8.32M | 14.33% |
| Millennium Management LLC | 3.85M | 6.64% |
| Vanguard Portfolio Management, LLC | 3.31M | 5.70% |
| Armistice Capital LLC | 2.65M | 4.56% |
| Vanguard Capital Management, LLC | 2.52M | 4.34% |
| State Street Investment Management (US) | 2.46M | 4.24% |
| Nomura Investment Management Business Trust | 2.38M | 4.10% |
| Khattar (Jack A) | 2.22M | 3.82% |
| Dimensional Fund Advisors, L.P. | 2.08M | 3.58% |
| Geode Capital Management, L.L.C. | 1.57M | 2.71% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.54M | 6.09% |
| Nomura Small Cap Core Fund | 1.92M | 3.30% |
| Vanguard Total Stock Market Index Fund | 1.76M | 3.03% |
| iShares Russell 2000 ETF | 1.45M | 2.50% |
| Vanguard Small-Cap Index Fund | 1.27M | 2.18% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of SUPN in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Rubin Jonathan | Option exercise | 750 | — |
| Rubin Jonathan | Tax withholding | 363 | $16.90K |
| Rubin Jonathan | Option exercise | 750 | — |
| Mottola Frank | Option exercise | 1.65K | — |
| Mottola Frank | Tax withholding | 797 | $37.12K |
| Mottola Frank | Option exercise | 1.65K | — |
| Khattar Jack A. | Option exercise | 29.85K | — |
| Khattar Jack A. | Tax withholding | 12.64K | $588.74K |
| Khattar Jack A. | Option exercise | 29.85K | — |
| Bhatt Padmanabh P. | Option exercise | 2.50K | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Gil CisnerosHouse | Purchase | $1K–$15K | Dec 11, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 4.99M
- Days to cover
- 7.38
- % of shares outstanding
- 8.59%
- Average daily volume
- 676.00K
- Change since last report
- −0.1%
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