WATER ISLAND CAPITAL LLC

Position in PACB — Pacific Biosciences Of California, Inc.

CIK 1222765 NEW YORK, NY

Position in PACB

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$459,758

+$100,666 QoQ

Shares Held

273,666

+0.6% QoQ

Ownership

0.088%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

#59

of 221 holders

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

WATER ISLAND CAPITAL LLC holds $67,845,409 across 3 Medical Devices names. PACB ranks #3 (0.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	PEN	Penumbra Inc	150,456	$47,506,482
2	AVNS	Avanos Medical, Inc.	799,002	$19,879,169
3	PACB	Pacific Biosciences Of California, Inc. This page	273,666	$459,758

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$459,758	273,666	+0.6%	Shares	Sole	2026-08-14
2026-03-31	$359,092	272,040	+660.9%	Shares	Sole	2026-05-15
2025-09-30	$45,765	35,754	+155.4%	Shares	Sole	2025-11-14
2024-09-30	$23,800	14,000	-30.0%	Shares	Sole	2024-11-14
2024-06-30	$27,400	20,000	+91.1%	Shares	Sole	2024-11-14
2024-03-31	$39,236	10,463	-34.6%	Shares	Sole	2024-11-14
2023-09-30	$133,600	16,000	-5.9%	Shares	Sole	2024-11-14
2022-12-31	$139,060	17,000	-61.8%	Shares	Sole	2024-11-14
2022-06-30	$196,906	44,549	+48.5%	Shares	Sole	2022-08-15
2022-03-31	$273,000	30,000	-98.0%	Shares	Sole	2022-05-13
2020-09-30	$15,000,741	1,519,832	-71.9%	Shares	Sole	2020-11-12
2020-06-30	$18,660,235	5,408,764	-0.6%	Shares	Sole	2020-08-12
2020-03-31	$16,657,305	5,443,564	—	Shares	Sole	2020-05-12
No filing history on record for this holder in this stock.