Pacific Biosciences Of California, Inc. (PACB) Insider Ownership

Historic Insider Ownership Trends

As of June 18, 2026, the three largest insider holders of PACB are Christian O Henry (President Ceo, 3.58Mn shares), Oene Mark Van (Chief Operating Officer, 2.24Mn shares), James R Ii Gibson (Officer, 1.25Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
John F Milligan - 132,821 0 20 Jun, 2024
Kathy Ordonez Chief Commercial Officer 403,037 0 20 Jun, 2024
Randall S Livingston - 22,821 0 20 Jun, 2024
Marshall Mohr - 132,821 0 20 Jun, 2024
Christian O Henry President Ceo 3,581,813 0 04 Mar, 2026
James R Ii Gibson - 1,245,663 0 03 Apr, 2026
Lucy Shapiro - 22,821 0 20 Jun, 2024
Christopher M Smith - 54,099 0 03 Feb, 2025
David W Meline - 57,116 0 20 Jun, 2024
William W. Ericson - 41,616 0 20 Jun, 2024
Oene Mark Van Chief Operating Officer 2,243,634 0 04 Mar, 2026
Susan G. Kim Chief Financial Officer 695,654 0 02 Oct, 2024
Peter Fromen Chief Commercial Officer 190,280 0 04 Mar, 2022
Hannah Valantine - 22,821 0 20 Jun, 2024
Christopher Gibson - 111,386 0 10 Apr, 2026
Michele Farmer Chief Accounting Officer 305,948 0 04 Mar, 2026
Jeff Eidel - 869,730 0 20 Aug, 2024

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
08 Apr, 2026 Christopher Gibson Common Stock A 57,473 $0.00 111,386 D A
08 Apr, 2026 Christopher Gibson Stock Option (right to buy) A 77,842 $0.00 77,842 D A
01 Apr, 2026 James R Ii Gibson Common Stock D 88,185 $1.37 1,245,663 D S
03 Mar, 2026 Christopher Gibson Common Stock A 53,913 $0.00 53,913 D A
03 Mar, 2026 Christopher Gibson Stock Option (right to buy) A 73,087 $0.00 73,087 D A
03 Mar, 2026 Michele Farmer Common Stock D 2,979 $1.51 305,948 D S
03 Mar, 2026 Christian O Henry Common Stock D 12,497 $1.51 3,581,813 D S
03 Mar, 2026 Oene Mark Van Common Stock D 6,504 $1.51 2,243,634 D S
03 Mar, 2026 Oene Mark Van Common Stock D 6,504 $1.51 2,243,634 D S
03 Mar, 2026 Oene Mark Van Common Stock D 6,504 $1.51 2,243,634 D S
27 Feb, 2026 Christian O Henry Common Stock A 920,810 $0.00 3,594,310 D A
27 Feb, 2026 Oene Mark Van Common Stock A 500,000 $0.00 2,242,638 D A
27 Feb, 2026 Michele Farmer Common Stock A 89,835 $0.00 308,927 D A
27 Feb, 2026 James R Ii Gibson Common Stock A 333,848 $0.00 1,333,848 D A
27 Feb, 2026 Oene Mark Van Common Stock A 500,000 $0.00 2,242,638 D A
27 Feb, 2026 Oene Mark Van Common Stock A 500,000 $0.00 2,242,638 D A
27 Feb, 2026 James R Ii Gibson Stock Option (right to buy) A 667,696 $0.00 667,696 D A
27 Feb, 2026 Oene Mark Van Stock Option (right to buy) A 1,000,000 $0.00 1,000,000 D A
27 Feb, 2026 Oene Mark Van Stock Option (right to buy) A 1,000,000 $0.00 1,000,000 D A
27 Feb, 2026 Michele Farmer Stock Option (right to buy) A 179,670 $0.00 179,670 D A