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Stocks/PACB/SEC Filings/424B5 Nov 10, 2026

PACB 424B5: Shelf registration

Pacific Biosciences

Filed with the SEC on Nov 10, 2026 · accession 0001104659-26-125153

PACB filed a 424B5 (prospectus (offering)) with the SEC on Nov 10, 2026. Pacific Biosciences filed a prospectus supplement for an at-the-market (ATM) offering of up to $100 million of common stock through sales agent Allen & Company LLC. The stock moved -5.1% by the first close after the filing.

Summary of the filing

Pacific Biosciences filed a prospectus supplement for an at-the-market (ATM) offering of up to $100 million of common stock through sales agent Allen & Company LLC. The company will pay up to 3% commission on gross proceeds.

For details, click here →How to read a 424B5 →

Key details

Maximum aggregate offering price of common stock$100.0M
Last reported sale price per share on November 9, 2026$2
Maximum sales agent commission as percentage of gross proceeds$3
IssuerPacific Biosciences of California, Inc.
Sales agent / underwriterAllen & Company LLC

How PACB stock reacted

Close before

$2.36

Nov 9, 2026

First close after

-5.08%

$2.24

5 trading days

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Since filing

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Frequently asked questions

What did PACB file with the SEC on Nov 10, 2026?

PACB filed a 424B5 (Shelf registration). Pacific Biosciences filed a prospectus supplement for an at-the-market (ATM) offering of up to $100 million of common stock through sales agent Allen & Company LLC. The company will pay up to 3% commission on gross proceeds.

What does a shelf registration mean for PACB stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B5?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did PACB stock react to this filing?

PACB closed at $2.36 before the filing and $2.24 on Nov 10, 2026 (-5.08%).

Other PACB SEC filings

  • 8-K · Secondary offeringNov 10, 2026
  • SCHEDULE 13G · SEC filingNov 9, 2026
  • SCHEDULE 13G · SEC filingNov 6, 2026
  • 10-Q · SEC filingNov 5, 2026
  • 8-K · Cfo changeNov 4, 2026
  • SCHEDULE 13G/A · SEC filingAug 14, 2026
  • 10-Q · SEC filingAug 6, 2026
  • 8-K · Ceo changeAug 5, 2026
  • 8-K · Board changeJul 9, 2026
  • 8-K · SEC filingJun 4, 2026

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Source: SEC EDGAR filing 0001104659-26-125153. The summary and key details are extracted by SEPT from the filing and may contain errors. Price reaction uses daily closing prices. Not financial advice.