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PACB

PACIFIC BIOSCIENCES OF CALIFORNIA (PACB) stock: insider trades, news & valuation

Heavy selling
Close · Oct 9, 2026 $2.33 +1.3% on the day +52.3% over 12 months 52-week range $1.11 – $2.87

Share price and insider trades

PACB closeInsider buyInsider sale
123NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $30,409 on 2026-08-17 · Oene Mark VanSold $33,190 on 2026-03-03 · Christian O Henry, Michele Farmer, Oene Mark VanSold $120,813 on 2026-04-01 · James R Gibson IISold $343,821 on 2026-02-18 · Christian O Henry, Michele Farmer, Oene Mark VanSold $784,941 on 2026-02-17 · Christian O Henry, Michele Farmer, Oene Mark VanSold $2,056,921 on 2026-10-06 · James R Gibson II
Bought, 12 months$0
Sold, 12 months$3.4M
Insiders buying0
Insiders selling4

PACIFIC BIOSCIENCES OF CALIFORNIA insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 4 sold $3.4M of PACB stock on the open market.

PACB insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q1 2026: $1.2M sold (9 trades)Q1 2026Q2 2026: $121K sold (1 trades)Q2 2026Q3 2026: $30K sold (1 trades)Q3 2026Q4 2026: $2.1M sold (1 trades)Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0$2.1M1
Q3 2026—0$30K1
Q2 2026—0$121K1
Q1 2026—0$1.2M9

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day2.7×Last 5 sessions
Insiders' paper profit—On all tracked purchases —

Summary

Over the past 12 months, 0 PACIFIC BIOSCIENCES OF CALIFORNIA, INC. insiders reported open-market purchases totaling $0, while 4 insiders reported sales totaling $3.4M. 1 of 12 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Oct 8SEC James R Gibson IISee Remarks Sell Plan 661,8151,083,848 held (−38%) $3.11 $2.1M -25.0% —
Aug 18SEC Oene Mark VanSee Remarks Sell 26,9112,705,853 held (−1%) $1.13 $30K +106.2% —
Apr 3SEC James R Gibson IISee Remarks Sell 88,1851,245,663 held (−7%) $1.37 $121K +70.1% —
Mar 4SEC Christian O HenrySee Remarks Sell 12,4973,581,813 held (−0%) $1.51 $19K +54.3% —
Mar 4SEC Oene Mark VanSee Remarks Sell 6,5042,243,634 held (−0%) $1.51 $10K +54.3% —
Mar 4SEC Michele FarmerSee Remarks Sell 2,979305,948 held (−1%) $1.51 $4K +54.3% —
Feb 19SEC Christian O HenrySee Remarks Sell 331,7932,814,374 held (−11%) $1.58 $524K +47.5% —
Feb 19SEC Christian O HenrySee Remarks Sell 140,8742,673,500 held (−5%) $1.63 $230K +42.9% —
Feb 19SEC Oene Mark VanSee Remarks Sell 129,7901,797,745 held (−7%) $1.58 $205K +47.5% —
Feb 19SEC Oene Mark VanSee Remarks Sell 55,1071,742,638 held (−3%) $1.63 $90K +42.9% —
Feb 19SEC Michele FarmerSee Remarks Sell 35,215234,044 held (−13%) $1.58 $56K +47.5% —
Feb 19SEC Michele FarmerSee Remarks Sell 14,952219,092 held (−6%) $1.63 $24K +42.9% —

Insiders at PACIFIC BIOSCIENCES OF CALIFORNIA, INC.

InsiderBoughtSoldLast filingScore
James R Gibson IISee Remarks — $2.2M Oct 8, 2026 —
Christian O HenrySee Remarks — $773K Mar 4, 2026 —
Oene Mark VanSee Remarks — $335K Aug 18, 2026 —
Michele FarmerSee Remarks — $85K Mar 4, 2026 —

PACB stock: common questions

Are PACIFIC BIOSCIENCES OF CALIFORNIA, INC. insiders buying PACB stock?

In the past 12 months, 0 insiders reported open-market purchases of PACB worth $0.

Are PACIFIC BIOSCIENCES OF CALIFORNIA, INC. insiders selling PACB stock?

4 insiders reported sales worth $3.4M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is PACB's 52-week range?

Over the past year PACB has traded between $1.11 and $2.87. It last closed at $2.33 on Oct 9, 2026.