SEC Form 4 · Updated Daily

PACB

— PACIFIC BIOSCIENCES OF CALIFORNIA, INC. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
HENRY CHRISTIAN O	Director	3,581,813	2026-03-03	S
Van Oene Mark	Officer	2,705,853	2026-08-17	S
Gibson James R II	Officer	1,245,663	2026-04-01	S
Farmer Michele	Officer	305,948	2026-03-03	S
Gibson Christopher	Director	111,386	2026-04-08	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-08-17	Van Oene Mark	Open-market sale	26,911	$1.13	2,705,853
2026-08-10	Van Oene Mark	Grant / award (derivative)	1,967,888	$0.00	1,967,888
2026-08-10	Van Oene Mark	Grant / award	489,130	$0.00	2,732,764
2026-06-03	ORDONEZ KATHY	Grant / award (derivative)	223,492	$0.00	223,492
2026-06-03	MILLIGAN JOHN F	Grant / award (derivative)	223,492	$0.00	223,492
2026-06-03	Ericson William W.	Grant / award (derivative)	223,492	$0.00	223,492
2026-06-03	LIVINGSTON RANDALL S	Grant / award (derivative)	223,492	$0.00	223,492
2026-06-03	Valantine Hannah	Grant / award (derivative)	223,492	$0.00	223,492
2026-06-03	Smith Christopher M	Grant / award (derivative)	223,492	$0.00	223,492
2026-06-03	Gibson Christopher	Grant / award (derivative)	74,497	$0.00	74,497
2026-06-03	MOHR MARSHALL	Grant / award (derivative)	223,492	$0.00	223,492
2026-04-08	Gibson Christopher	Grant / award (derivative)	77,842	$0.00	77,842
2026-04-08	Gibson Christopher	Grant / award	57,473	$0.00	111,386
2026-04-01	Gibson James R II	Open-market sale	88,185	$1.37	1,245,663
2026-03-03	Farmer Michele	Open-market sale	2,979	$1.51	305,948
2026-03-03	Van Oene Mark	Open-market sale	6,504	$1.51	2,243,634
2026-03-03	HENRY CHRISTIAN O	Open-market sale	12,497	$1.51	3,581,813
2026-03-03	Gibson Christopher	Grant / award (derivative)	73,087	$0.00	73,087
2026-03-03	Gibson Christopher	Grant / award	53,913	$0.00	53,913
2026-02-27	HENRY CHRISTIAN O	Grant / award (derivative)	1,841,621	$0.00	1,841,621
2026-02-27	HENRY CHRISTIAN O	Grant / award	920,810	$0.00	3,594,310
2026-02-27	Van Oene Mark	Grant / award (derivative)	1,000,000	$0.00	1,000,000
2026-02-27	Van Oene Mark	Grant / award	500,000	$0.00	2,242,638
2026-02-27	Gibson James R II	Grant / award (derivative)	667,696	$0.00	667,696
2026-02-27	Gibson James R II	Grant / award	333,848	$0.00	1,333,848
2026-02-27	Farmer Michele	Grant / award (derivative)	179,670	$0.00	179,670
2026-02-27	Farmer Michele	Grant / award	89,835	$0.00	308,927
2026-02-18	Farmer Michele	Open-market sale	14,952	$1.63	219,092
2026-02-18	HENRY CHRISTIAN O	Open-market sale	140,874	$1.63	2,673,500
2026-02-18	Van Oene Mark	Open-market sale	55,107	$1.63	1,742,638
2026-02-17	Farmer Michele	Open-market sale	35,215	$1.58	234,044
2026-02-17	HENRY CHRISTIAN O	Open-market sale	331,793	$1.58	2,814,374
2026-02-17	Van Oene Mark	Open-market sale	129,790	$1.58	1,797,745
2025-08-18	Van Oene Mark	Open-market sale	26,836	$1.31	1,920,035
2025-06-04	Smith Christopher M	Grant / award (derivative)	32,500	$0.00	32,500
2025-06-04	Valantine Hannah	Grant / award (derivative)	65,000	$0.00	65,000
2025-06-04	MILLIGAN JOHN F	Grant / award (derivative)	65,000	$0.00	65,000
2025-06-04	Ericson William W.	Grant / award (derivative)	65,000	$0.00	65,000
2025-06-04	Shapiro Lucy	Grant / award (derivative)	65,000	$0.00	65,000
2025-06-04	ORDONEZ KATHY	Grant / award (derivative)	65,000	$0.00	65,000

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.