Pacific Biosciences of California insider trading

Bought

—

Sold

$1.3M

none on a 10b5-1 plan

Net

−$1.3M

Insiders

4

• Van Oene Mark

  See Remarks

  −$30.4K

  Aug 17, 2026

  26,911 sh · $1.13

• Gibson James R II

  See Remarks

  −$120.8K

  Apr 01, 2026

  88,185 sh · $1.37

• Henry Christian O

  See Remarks

  −$18.9K

  Mar 03, 2026

  12,497 sh · $1.51

• Van Oene Mark

  See Remarks

  −$9.8K

  Mar 03, 2026

  6,504 sh · $1.51

• Farmer Michele

  See Remarks

  −$4.5K

  Mar 03, 2026

  2,979 sh · $1.51

• Van Oene Mark

  See Remarks

  −$89.8K

  Feb 18, 2026

  55,107 sh · $1.63

• Henry Christian O

  See Remarks

  −$229.5K

  Feb 18, 2026

  140,874 sh · $1.63

• Farmer Michele

  See Remarks

  −$24.4K

  Feb 18, 2026

  14,952 sh · $1.63

• Van Oene Mark

  See Remarks

  −$204.5K

  Feb 17, 2026

  129,790 sh · $1.58

• Henry Christian O

  See Remarks

  −$522.9K

  Feb 17, 2026

  331,793 sh · $1.58

• Farmer Michele

  See Remarks

  −$55.5K

  Feb 17, 2026

  35,215 sh · $1.58

Largest sale

−$524.2K of PACB by Henry Christian O (President & CEO) on Feb 17, 2026.

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

SEC industry classification

Laboratory Analytical Instruments

Headquarters

Menlo Park, CA

Incorporated in

DE

Listed on

Nasdaq

SEC Central Index Key

0001299130

Previously filed as

NANOFLUIDICS INC

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Health Care sector shown above.

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

Open-market purchase (code P)

An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.

Grants and option exercises (codes A, M)

Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.

Cluster buy

Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

Are PACB insiders buying or selling?

Between Feb 17, 2026 and Aug 17, 2026, 4 Pacific Biosciences of California insiders made no open-market purchases and 11 sales worth $1.3M, a net sale of $1.3M.

How much PACB stock have insiders bought and sold in the last two years?

Between Jul 01, 2024 and Jun 30, 2026, 6 Pacific Biosciences of California insiders made no open-market purchases and 23 sales worth $2.5M. In the four quarters to Jun 30, 2026: no purchases and 11 sales ($1.3M). The largest sale was Henry Christian O selling $524.2K on Feb 17, 2026.

What was the largest recent PACB insider trade?

Henry Christian O (See Remarks) sold $522.9K of PACB stock on Feb 17, 2026 at about $1.58 a share.

When did an insider last buy PACB shares?

No open-market purchase by a Pacific Biosciences of California insider appears in the filings from Feb 17, 2026 to Aug 17, 2026 — every recorded open-market transaction in that period was a sale.

Where does PACB insider trading data come from?

From the Form 4 filings Pacific Biosciences of California's officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.