Penbrook Management LLC

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1381055 NEW YORK, NY

Position in REGN

as of Jun 30, 2026 · filed Jul 23, 2026 Compact

Position Value

$489,478

-$117,044 QoQ

Shares Held

785

0.0% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.33%

of 13F equity value

Holder Rank

#163

of 334 holders

Holding Since

Mar 2021

22 quarters on record

Voting authority Sole 0% Shared 0% None 100%

Healthcare · as of Jun 30, 2026

Penbrook Management LLC holds $4,585,431 across 4 Biotechnology names. REGN ranks #3 (10.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	PRTA	Prothena Corp Public Ltd Co	271,720	$2,660,138
2	MESO	Mesoblast Ltd	87,075	$1,178,124
3	REGN	Regeneron Pharmaceuticals, Inc. This page	785	$489,478
4	IOVA	Iovance Biotherapeutics, Inc.	61,945	$257,691

22 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$489,478	785	0.0%	Shares	Sole	2026-07-23
2026-03-31	$606,522	785	-1.5%	Shares	Sole	2026-04-21
2025-12-31	$615,180	797	0.0%	Shares	Sole	2026-01-06
2025-09-30	$448,129	797	0.0%	Shares	Sole	2025-10-22
2025-06-30	$418,425	797	-11.1%	Shares	Sole	2025-07-28
2025-03-31	$568,904	897	0.0%	Shares	Sole	2025-04-01
2024-12-31	$638,960	897	-21.8%	Shares	Sole	2025-01-23
2024-09-30	$1,205,772	1,147	0.0%	Shares	Sole	2024-10-15
2024-06-30	$1,205,531	1,147	0.0%	Shares	Sole	2024-07-24
2024-03-31	$1,103,976	1,147	0.0%	Shares	Sole	2024-04-18
2023-12-31	$1,007,398	1,147	+9.6%	Shares	Sole	2024-01-16
2023-09-30	$861,639	1,047	+2.4%	Shares	Sole	2023-10-10
2023-06-30	$734,347	1,022	-4.7%	Shares	Sole	2023-07-17
2023-03-31	$880,830	1,072	0.0%	Shares	Sole	2023-04-20
2022-12-31	$773,437	1,072	-15.7%	Shares	Sole	2023-01-24
2022-09-30	$876,242	1,272	0.0%	Shares	Sole	2022-10-31
2022-06-30	$751,917	1,272	0.0%	Shares	Sole	2022-07-29
2022-03-31	$888,390	1,272	0.0%	Shares	Sole	2022-04-26
2021-12-31	$803,293	1,272	0.0%	Shares	Sole	2022-01-10
2021-09-30	$769,788	1,272	0.0%	Shares	Sole	2021-10-26
2021-06-30	$710,462	1,272	+57.0%	Shares	Sole	2021-07-27
2021-03-31	$383,243	810	—	Shares	Sole	2021-05-06
No filing history on record for this holder in this stock.