Pacific Biosciences of California, Inc. (PACB) Insider Trading

Last 12 months

Insiders sold $3.37M and bought nothing on the open market.

61% of the selling was scheduled in advance under 10b5-1 plans. See Remarks Christian O Henry sold $754k on Feb 18, 15% of their stake, outside a plan. The last open-market buy by an executive or director was in Mar 2024.

Net open-market

−$3.37M

0 buys · 9 sales

Under a 10b5-1 plan

61%

of the value sold

Insiders who bought / sold

0 / 4

executives and directors

Last open-market buy

Mar 2024

Mar 6, 2024

Get an email when PACB's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 6	James R Gibson II See Remarks	Sold10b5-1 plan	661,815	$3.11	$2.06M	38%	Form 4
Aug 17	Mark Van Oene See Remarks	SoldNo plan	26,911	$1.13	$30k	1.0%	Form 4
Apr 1	James R Gibson II See Remarks	SoldNo plan	88,185	$1.37	$121k	6.6%	Form 4
Mar 3	Christian O Henry See Remarks	SoldNo plan	12,497	$1.51	$19k	0.3%	Form 4
Mar 3	Mark Van Oene See Remarks	SoldNo plan	6,504	$1.51	$10k	0.3%	Form 4
Mar 3	Michele Farmer See Remarks	SoldNo plan	2,979	$1.51	$4k	1.0%	Form 4
Feb 17 – 18	Mark Van Oene See Remarks	SoldNo plan 2 parts	184,897	$1.59 average	$295k	9.6%	Form 4
Feb 17 – 18	Christian O Henry See Remarks	SoldNo plan 2 parts	472,667	$1.59 average	$754k	15%	Form 4
Feb 17 – 18	Michele Farmer See Remarks	SoldNo plan 2 parts	50,167	$1.59 average	$80k	19%	Form 4
Aug 18, 2025	Mark Van Oene See Remarks	SoldNo plan	26,836	$1.31	$35k	1.4%	Form 4
May 19, 2025	Michele Farmer See Remarks	SoldNo plan	5,195	$1.00	$5k	1.9%	Form 4
Mar 3, 2025	Christian O Henry See Remarks	SoldNo plan	12,497	$1.41	$18k	0.6%	Form 4
Mar 3, 2025	Mark Van Oene See Remarks	SoldNo plan	6,486	$1.41	$9k	0.4%	Form 4
Mar 3, 2025	Michele Farmer See Remarks	SoldNo plan	2,973	$1.41	$4k	1.6%	Form 4
Feb 18, 2025	Michele Farmer See Remarks	SoldNo plan	24,349	$1.88	$46k	11%	Form 4
Feb 18, 2025	Mark Van Oene See Remarks	SoldNo plan	100,773	$1.88	$189k	6.3%	Form 4
Feb 18, 2025	Christian O Henry See Remarks	SoldNo plan	259,909	$1.88	$489k	10%	Form 4
Jan 10, 2025	Mark Van Oene See Remarks	SoldNo plan	34,405	$2.03	$70k	2.1%	Form 4

Oct 610b5-1 plan
James R Gibson II
See Remarks · sold 661,815 at $3.11
$2.06M
38% of stake
Aug 17No plan
Mark Van Oene
See Remarks · sold 26,911 at $1.13
$30k
1.0% of stake
Apr 1No plan
James R Gibson II
See Remarks · sold 88,185 at $1.37
$121k
6.6% of stake
Mar 3No plan
Christian O Henry
See Remarks · sold 12,497 at $1.51
$19k
0.3% of stake
Mar 3No plan
Mark Van Oene
See Remarks · sold 6,504 at $1.51
$10k
0.3% of stake
Mar 3No plan
Michele Farmer
See Remarks · sold 2,979 at $1.51
$4k
1.0% of stake
Feb 17 – 18No plan
Mark Van Oene
See Remarks · sold 184,897 at avg $1.59
$295k
9.6% of stake
Feb 17 – 18No plan
Christian O Henry
See Remarks · sold 472,667 at avg $1.59
$754k
15% of stake
Feb 17 – 18No plan
Michele Farmer
See Remarks · sold 50,167 at avg $1.59
$80k
19% of stake
Aug 18, 2025No plan
Mark Van Oene
See Remarks · sold 26,836 at $1.31
$35k
1.4% of stake
May 19, 2025No plan
Michele Farmer
See Remarks · sold 5,195 at $1.00
$5k
1.9% of stake
Mar 3, 2025No plan
Christian O Henry
See Remarks · sold 12,497 at $1.41
$18k
0.6% of stake
Mar 3, 2025No plan
Mark Van Oene
See Remarks · sold 6,486 at $1.41
$9k
0.4% of stake
Mar 3, 2025No plan
Michele Farmer
See Remarks · sold 2,973 at $1.41
$4k
1.6% of stake
Feb 18, 2025No plan
Michele Farmer
See Remarks · sold 24,349 at $1.88
$46k
11% of stake
Feb 18, 2025No plan
Mark Van Oene
See Remarks · sold 100,773 at $1.88
$189k
6.3% of stake
Feb 18, 2025No plan
Christian O Henry
See Remarks · sold 259,909 at $1.88
$489k
10% of stake
Jan 10, 2025No plan
Mark Van Oene
See Remarks · sold 34,405 at $2.03
$70k
2.1% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch PACB, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in PACB's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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