---
schema_version: "secwatch.filing_event.v1"
accession: "0001299130-23-000142"
form_type: "8-K"
ticker: "PACB"
cik: "0001299130"
company_name: "PACIFIC BIOSCIENCES OF CALIFORNIA, INC."
filed_at: "2023-12-11T23:59:59+00:00"
generated_at: "2026-06-07T14:46:00.917741+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Director David Botstein resigns from Pacific Biosciences board effective Dec 7, 2023

## Summary
- David Botstein notified the board of his resignation, effective December 7, 2023.
- No disagreement existed between Botstein and the company regarding operations, policies, or practices.
- Botstein's departure reduces board size; no replacement announced in the filing.

## SEC filing metadata
- accession: 0001299130-23-000142
- form_type: 8-K
- ticker: PACB
- cik: 0001299130
- company_name: PACIFIC BIOSCIENCES OF CALIFORNIA, INC.
- filed_at: 2023-12-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1299130/000129913023000142/0001299130-23-000142-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1299130/000129913023000142/pacb-20231207.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001299130-23-000142
- JSON: https://secwatch.observer/filing/0001299130-23-000142.json
- Plain text: https://secwatch.observer/filing/0001299130-23-000142.txt

## Key facts
- Executive change
  David Botstein resigned as Director at PACIFIC BIOSCIENCES OF CALIFORNIA, INC..
  - Action: resigned
  - Role: Director
  source text: On December 7, 2023, David Botstein, a member of the board of directors (the “Board”) of Pacific Biosciences of California, Inc. (the “Company”), notified the Company of his resignation from the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1299130/000129913023000142/0001299130-23-000142-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.