SEC ownership of SUPERNUS PHARMACEUTICALS, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001356576.
- CIK
- 0001356576
- Symbol
- SUPN on Nasdaq
- Location
- Rockville, MD
- Parsed ownership evidence
- 13F, 13D/G, and 3/4/5
- Lead holder
- BlackRock, Inc.
- 13D/G signal
- BlackRock, Inc.
- Latest evidence date
- 31 Mar 2026
Ownership snapshot
Top shareholders of SUPERNUS PHARMACEUTICALS, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with the largest verified stakes, then open the linked filing trail.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Evidence rows
50
Latest as of
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 15%
13D/G row: BlackRock, Inc.
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
15%
from 13D/G
|
$454,730,061
8,797,254 shares
|
— | 31 Mar 2026 |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
Company
|
5.7%
from 13D/G
|
$171,402,644
3,315,973 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.7%
|
$168,680,442
3,263,309 shares
|
$0 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5%
|
$149,946,694
2,900,884 shares
|
$0 | 31 Mar 2026 |
| ARMISTICE CAPITAL, LLC |
13D/G
13F
Company
|
4.8%
|
$136,154,640
2,764,000 shares
|
-$3,546,720 | 31 Dec 2025 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
4.7%
|
$134,803,348
2,712,341 shares
|
$0 | 31 Dec 2025 |
| Georges Gemayel |
3/4/5
Director
|
0.05%
|
$1,623,339
27,277 shares
mixed-class rows
|
-$1,002,811 | 05 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
4%
|
$118,273,285
2,288,127 shares
|
— | 31 Mar 2026 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
Company
|
3.5%
|
$105,303,000
2,037,202 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
3%
|
$88,142,925
1,705,222 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.8%
|
$83,933,938
1,623,514 shares
|
— | 31 Mar 2026 |
| CITADEL ADVISORS LLC |
13F
Company
|
2.6%
|
$77,196,223
1,493,446 shares
|
— | 31 Mar 2026 |
| LOOMIS SAYLES & CO L P |
13F
Company
|
2.5%
|
$73,698,522
1,425,779 shares
|
— | 31 Mar 2026 |
| Stephens Investment Management Group LLC |
13F
Company
|
2.3%
|
$69,850,299
1,351,331 shares
|
— | 31 Mar 2026 |
| Point72 Asset Management, L.P. |
13F
Company
|
2.3%
|
$68,156,108
1,318,555 shares
|
— | 31 Mar 2026 |
| GW&K Investment Management, LLC |
13F
Company
|
1.8%
|
$54,542,000
1,055,184 shares
|
— | 31 Mar 2026 |
| Sofinnova Investments, Inc. |
13F
Company
|
1.7%
|
$49,328,232
954,309 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
1.6%
|
$47,239,157
913,893 shares
|
— | 31 Mar 2026 |
| GOLDMAN SACHS GROUP INC |
13F
Company
|
1.5%
|
$44,271,813
856,487 shares
|
— | 31 Mar 2026 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
1.2%
|
$36,918,329
714,226 shares
|
— | 31 Mar 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
Company
|
1.2%
|
$36,491,899
705,976 shares
|
— | 31 Mar 2026 |
| NORTHERN TRUST CORP |
13F
Company
|
1.2%
|
$36,154,881
699,456 shares
|
— | 31 Mar 2026 |
| ASHFORD CAPITAL MANAGEMENT INC |
13F
Company
|
1.1%
|
$33,359,744
645,381 shares
|
— | 31 Mar 2026 |
| Freestone Grove Partners LP |
13F
Company
|
1.1%
|
$33,149,779
641,319 shares
|
— | 31 Mar 2026 |
| D. E. Shaw & Co., Inc. |
13F
Company
|
1.1%
|
$32,174,441
622,450 shares
|
— | 31 Mar 2026 |
| Assenagon Asset Management S.A. |
13F
Company
|
0.92%
|
$27,427,644
530,618 shares
|
— | 31 Mar 2026 |
| VICTORY CAPITAL MANAGEMENT INC |
13F
Company
|
0.87%
|
$25,969,366
502,406 shares
|
— | 31 Mar 2026 |
| Qube Research & Technologies Ltd |
13F
Company
|
0.86%
|
$25,751,855
498,198 shares
|
— | 31 Mar 2026 |
| RICE HALL JAMES & ASSOCIATES, LLC |
13F
Company
|
0.83%
|
$24,677,633
477,416 shares
|
— | 31 Mar 2026 |
| Pictet Asset Management Holding SA |
13F
Company
|
0.78%
|
$22,268,725
450,764 shares
|
— | 31 Mar 2026 |
| Woodline Partners LP |
13F
Company
|
0.78%
|
$23,208,603
448,996 shares
|
— | 31 Mar 2026 |
| Invesco Ltd. |
13F
Company
|
0.72%
|
$21,331,585
412,683 shares
|
— | 31 Mar 2026 |
| SG Americas Securities, LLC |
13F
Company
|
0.65%
|
$19,498,000
377,213 shares
|
— | 31 Mar 2026 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP |
13F
Company
|
0.65%
|
$19,439,575
376,079 shares
|
— | 31 Mar 2026 |
| VANGUARD FIDUCIARY TRUST CO |
13F
Company
|
0.64%
|
$19,086,377
369,247 shares
|
— | 31 Mar 2026 |
| Bank of New York Mellon Corp |
13F
Company
|
0.63%
|
$18,732,870
362,408 shares
|
— | 31 Mar 2026 |
| PRINCIPAL FINANCIAL GROUP INC |
13F
Company
|
0.59%
|
$17,632,338
341,117 shares
|
— | 31 Mar 2026 |
| MetLife Investment Management, LLC |
13F
Company
|
0.53%
|
$15,722,651
304,172 shares
|
— | 31 Mar 2026 |
| Krensavage Asset Management, LLC |
13F
Company
|
0.49%
|
$14,508,000
280,681 shares
|
— | 31 Mar 2026 |
| Aberdeen Group plc |
13F
Company
|
0.48%
|
$14,243,748
275,561 shares
|
— | 31 Mar 2026 |
| TWO SIGMA INVESTMENTS, LP |
13F
Company
|
0.47%
|
$14,019,775
271,228 shares
|
— | 31 Mar 2026 |
| JPMORGAN CHASE & CO |
13F
Company
|
0.43%
|
$12,373,772
250,735 shares
|
— | 31 Mar 2026 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
0.4%
|
$11,885,547
229,939 shares
|
— | 31 Mar 2026 |
| GLENMEDE TRUST CO NA |
13F
Company
|
0.38%
|
$11,325,226
219,099 shares
|
— | 31 Mar 2026 |
| Nuveen, LLC |
13F
Company
|
0.37%
|
$11,167,469
216,047 shares
|
— | 31 Mar 2026 |
| FMR LLC |
13F
Company
|
0.36%
|
$10,822,353
209,370 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
0.36%
|
$10,809,619
209,124 shares
|
— | 31 Mar 2026 |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
Company
|
0.36%
|
$10,604,617
205,158 shares
|
— | 31 Mar 2026 |
| Aristotle Capital Boston, LLC |
13F
Company
|
0.35%
|
$10,505,468
203,094 shares
|
— | 31 Mar 2026 |
| ExodusPoint Capital Management, LP |
13F
Company
|
0.35%
|
$10,447,376
202,116 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$32,269,469.
Buys
$0
Insiders: 0
Sells
$32,269,469
Insiders: 9
Net
-$32,269,469
Shares: -682,797
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 682,797
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 176,906 | $0 | $8,996,963 | -$8,996,963 |
| 3-6 | 0 | 25,185 | $0 | $1,267,967 | -$1,267,967 |
| 6-9 | 0 | 258,800 | $0 | $12,480,007 | -$12,480,007 |
| 9-12 | 0 | 221,906 | $0 | $9,524,532 | -$9,524,532 |
Reporting owners
Insider holders from Forms 3/4/5
Current reporting-owner rows connected to SUPERNUS PHARMACEUTICALS, INC.. Open the relationship link for the CIK-to-CIK filing trail.
Rows
13
Lead holder
Jack A. Khattar
Net 12M change
-$32,269,469
Latest report
16 Mar 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jack A. Khattar | President, CEO, Director | $113,252,362 | -$20,309,838 | -15% | Mixed | 13 Mar 2026 |
| Charles W. Newhall III | Director | $6,291,759 | -$1,539,270 | -20% | Mixed | 24 Feb 2026 |
| Frederick M. Hudson | Director | $3,235,159 | -$586,858 | -15% | Mixed | 12 Mar 2026 |
| Tami Tillotson Martin | Sr. V.P., Regulatory Affairs | $2,631,048 | Mixed | 23 Feb 2024 | ||
| John M. Siebert | Director | $2,555,624 | Mixed | 23 Feb 2024 | ||
| Georges Gemayel | Director | $1,623,339 | -$1,002,811 | -38% | Mixed | 05 Mar 2026 |
| Carrolee Barlow | Director | $1,509,894 | Mixed | 24 Feb 2026 | ||
| Frank Mottola | SVP, Chief Tech. Ops. Officer | $1,138,181 | -$1,947,714 | -63% | Mixed | 06 Mar 2026 |
| Padmanabh P. Bhatt | Sr. VP of IP, CSO | $958,256 | -$5,419,984 | -85% | Mixed | 16 Mar 2026 |
| Jonathan Rubin | SVP, Chief Medical Officer | $774,130 | Mixed | 25 Feb 2026 | ||
| Timothy C. Dec | Senior Vice-President & CFO | $620,801 | -$524,092 | -46% | Mixed | 06 Mar 2026 |
| Bethany Sensenig | Director | $177,658 | -$455,105 | -72% | Mixed | 19 Feb 2026 |
| William Todd Horich | SVP, Commercial Operations | $0 | -$483,797 | -100% | Mixed | 06 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for SUPERNUS PHARMACEUTICALS, INC.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Padmanabh P. Bhatt | SUPN | Common Stock | Sale | -29.8% | $359,621 | $49.60 | -7,250 | 17,044 | 18 Mar 2026 | Direct |
| Padmanabh P. Bhatt | SUPN | Common Stock | Options Exercise | 42.5% | 7,250 | 24,294 | 18 Mar 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -7,250 | 0 | 18 Mar 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Common Stock | Sale | -74.6% | $2,514,886 | $50.30 | -50,000 | 17,044 | 17 Mar 2026 | Direct |
| Padmanabh P. Bhatt | SUPN | Common Stock | Options Exercise | 293.4% | 50,000 | 67,044 | 17 Mar 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -50,000 | 0 | 17 Mar 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Common Stock | Sale | -74.6% | $2,513,925 | $50.28 | -50,000 | 17,044 | 16 Mar 2026 | Direct |
| Padmanabh P. Bhatt | SUPN | Common Stock | Options Exercise | 293.4% | 50,000 | 67,044 | 16 Mar 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -50,000 | 0 | 16 Mar 2026 | Direct | ||
| Jack A. Khattar | SUPN | Common Stock | Sale | -3.52% | $1,763,124 | $50.38 | -35,000 | 958,100 | 13 Mar 2026 | By the KBT Trust |
| Jack A. Khattar | SUPN | Common Stock | Other | -1.24% | -12,500 | 993,100 | 13 Mar 2026 | By the KBT Trust | ||
| Jack A. Khattar | SUPN | Common Stock | Other | 1.02% | 12,500 | 1,241,144 | 13 Mar 2026 | Direct | ||
| Frederick M. Hudson | SUPN | Common Stock | Sale | -8.16% | $271,725 | $50.61 | -5,369 | 60,413 | 12 Mar 2026 | Direct |
| William Todd Horich | SUPN | Common Stock | Sale | -100% | $244,145 | $55.00 | -4,439 | 0 | 10 Mar 2026 | Direct |
| Frank Mottola | SUPN | Common Stock | Sale | -8.09% | $87,074 | $53.65 | -1,623 | 18,440 | 09 Mar 2026 | Direct |
| William Todd Horich | SUPN | Common Stock | Sale | -50% | $239,652 | $54.00 | -4,438 | 4,439 | 09 Mar 2026 | Direct |
| Jack A. Khattar | SUPN | Common Stock | Tax liability | -1.33% | -16,574 | 1,228,644 | 06 Mar 2026 | Direct | ||
| Jack A. Khattar | SUPN | Common Stock | Options Exercise | 3.2% | 38,640 | 1,245,218 | 06 Mar 2026 | Direct | ||
| Jack A. Khattar | SUPN | Performance Share Unit | Options Exercise | -100% | -38,640 | 0 | 06 Mar 2026 | Direct | ||
| Frank Mottola | SUPN | Common Stock | Tax liability | -8.2% | -1,793 | 20,063 | 06 Mar 2026 | Direct | ||
| Frank Mottola | SUPN | Common Stock | Options Exercise | 20.7% | 3,750 | 21,856 | 06 Mar 2026 | Direct | ||
| Frank Mottola | SUPN | Performance Share Unit | Options Exercise | -100% | -3,750 | 0 | 06 Mar 2026 | Direct | ||
| Timothy C. Dec | SUPN | Common Stock | Tax liability | -30.1% | -2,883 | 6,682 | 06 Mar 2026 | Direct | ||
| Timothy C. Dec | SUPN | Common Stock | Options Exercise | 163% | 6,000 | 9,682 | 06 Mar 2026 | Direct | ||
| Timothy C. Dec | SUPN | Performance Share Unit | Options Exercise | -100% | -6,000 | 0 | 06 Mar 2026 | Direct | ||
| William Todd Horich | SUPN | Common Stock | Tax liability | -35.6% | -3,455 | 6,241 | 06 Mar 2026 | Direct | ||
| William Todd Horich | SUPN | Common Stock | Options Exercise | 301.1% | 7,500 | 9,991 | 06 Mar 2026 | Direct | ||
| William Todd Horich | SUPN | Performance Share Unit | Options Exercise | -100% | -7,500 | 0 | 06 Mar 2026 | Direct | ||
| Georges Gemayel | SUPN | Common Stock | Sale | -24.4% | $465,711 | $53.00 | -8,787 | 27,277 | 06 Mar 2026 | Direct |
| Georges Gemayel | SUPN | Common Stock | Options Exercise | 28.1% | 7,905 | 36,064 | 06 Mar 2026 | Direct | ||
| Georges Gemayel | SUPN | Director Stock Option (Right to Buy) | Options Exercise | -100% | -7,905 | 0 | 06 Mar 2026 | Direct | ||
| Georges Gemayel | SUPN | Common Stock | Sale | -26.2% | $537,100 | $53.71 | -10,000 | 28,159 | 05 Mar 2026 | Direct |
| Jack A. Khattar | SUPN | Performance Share Unit | Award | 38,640 | 38,640 | 28 Feb 2026 | Direct | |||
| Timothy C. Dec | SUPN | Performance Share Unit | Award | 6,000 | 3,000 | 28 Feb 2026 | Direct | |||
| Frank Mottola | SUPN | Performance Share Unit | Award | 3,750 | 3,750 | 28 Feb 2026 | Direct | |||
| Frank Mottola | SUPN | Common Stock | Tax liability | -5.12% | -977 | 18,106 | 25 Feb 2026 | Direct | ||
| Frank Mottola | SUPN | Common Stock | Award | 10.9% | 1,875 | 19,083 | 25 Feb 2026 | Direct | ||
| Frank Mottola | SUPN | Restricted Stock Unit | Disposed to Issuer | -50% | -1,875 | 1,875 | 25 Feb 2026 | Direct | ||
| Timothy C. Dec | SUPN | Common Stock | Tax liability | -20% | -1,279 | 5,115 | 25 Feb 2026 | Direct | ||
| Timothy C. Dec | SUPN | Common Stock | Award | 64.2% | 2,500 | 6,394 | 25 Feb 2026 | Direct | ||
| Timothy C. Dec | SUPN | Restricted Stock Unit | Disposed to Issuer | -50% | -2,500 | 2,500 | 25 Feb 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Common Stock | Tax liability | -3.67% | -650 | 17,044 | 25 Feb 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Common Stock | Award | 7.6% | 1,250 | 17,694 | 25 Feb 2026 | Direct | ||
| Padmanabh P. Bhatt | SUPN | Restricted Stock Unit | Disposed to Issuer | -50% | -1,250 | 1,250 | 25 Feb 2026 | Direct | ||
| Jonathan Rubin | SUPN | Common Stock | Tax liability | -4.82% | -675 | 13,341 | 25 Feb 2026 | Direct | ||
| Jonathan Rubin | SUPN | Common Stock | Award | 9.79% | 1,250 | 14,016 | 25 Feb 2026 | Direct | ||
| Jonathan Rubin | SUPN | Restricted Stock Unit | Disposed to Issuer | -50% | -1,250 | 1,250 | 25 Feb 2026 | Direct | ||
| Timothy C. Dec | SUPN | Common Stock | Tax liability | -52.3% | -2,369 | 2,160 | 24 Feb 2026 | Direct | ||
| Timothy C. Dec | SUPN | Common Stock | Award | 583.2% | 4,625 | 5,418 | 24 Feb 2026 | Direct | ||
| Timothy C. Dec | SUPN | Restricted Stock Unit | Disposed to Issuer | -100% | -4,625 | 0 | 24 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.