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LOOMIS SAYLES & CO L P

Position in SUPN — Supernus Pharmaceuticals, Inc.

CIK 312348 BOSTON, MA

Position in SUPN

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$73,698,516
+$1,691,069 QoQ
Shares Held
1,425,779
-1.6% QoQ
Ownership
2.46%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 88.6415075548174.ToString("F0")% Shared 0.ToString("F0")% None 11.358492445182598.ToString("F0")%

Common Shares in SUPN Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Mar 31, 2026

LOOMIS SAYLES & CO L P holds $194,398,910 across 8 Drug Manufacturers - Specialty & Generic names. SUPN ranks #1 (37.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 SUPN
Supernus Pharmaceuticals, Inc.
This page
1,425,779 $73,698,516

All Filings in SUPN

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $73,698,516 1,425,779
2025-12-31 $72,007,447 1,448,842
2025-09-30 $61,454,928 1,285,937
2025-06-30 $40,908,483 1,297,858
2025-03-31 $47,181,090 1,440,644
2024-12-31 $53,047,696 1,467,027
2024-09-30 $47,272,714 1,516,123
2024-06-30 $41,627,306 1,556,161
2024-03-31 $54,487,893 1,597,417
2023-12-31 $47,360,020 1,636,490
2023-09-30 $47,703,516 1,730,269
2023-06-30 $47,894,748 1,593,305
2023-03-31 $56,521,045 1,560,062
2022-12-31 $55,628,612 1,559,535
2022-09-30 $54,204,106 1,601,303
2022-06-30 $46,589,020 1,610,962
2022-03-31 $52,670,610 1,629,660
2021-12-31 $48,732,600 1,671,214
2021-09-30 $44,020,620 1,650,567
2021-06-30 $49,851,011 1,619,065
2021-03-31 $11,318,215 432,323
2020-12-31 $8,809,220 350,128
2020-09-30 $7,544,121 362,002
2020-06-30 $8,633,172 363,502
2020-03-31 $6,760,120 375,771