Comparable stake leader
BlackRock, Inc.
SEC ownership of SUPERNUS PHARMACEUTICALS, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001356576.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- SUPN on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001356576
- Issuer location
- Rockville, MD
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
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 comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 15%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 15%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
15%
MILLENNIUM MANAGEMENT LLC
5.7%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.7%
VANGUARD CAPITAL MANAGEMENT LLC
5%
ARMISTICE CAPITAL, LLC
4.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| 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 |
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 value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 181,381 | $0 | $9,225,228 | -$9,225,228 |
| 6-9 | 0 | 105,610 | $0 | $5,338,273 | -$5,338,273 |
| 9-12 | 0 | 395,806 | $0 | $17,705,969 | -$17,705,969 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-13 of 13 reporting-owner rows connected to SUPERNUS PHARMACEUTICALS, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
13
Largest Forms 3/4/5 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 for SUPERNUS PHARMACEUTICALS, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported 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 |
* marks a reported price that did not pass the local price check.