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Stocks/RCUS/SEC Filings/424B5 Oct 22, 2026

RCUS 424B5: Secondary offering

Filed with the SEC on Oct 22, 2026 · accession 0001193125-26-428916

RCUS filed a 424B5 (prospectus (offering)) with the SEC on Oct 22, 2026. Arcus Biosciences, Inc. is offering 14,285,715 shares of common stock at $17.50 per share, raising approximately $250 million in gross proceeds. The stock moved +1.4% by the first close after the filing.

Summary of the filing

Arcus Biosciences, Inc. is offering 14,285,715 shares of common stock at $17.50 per share, raising approximately $250 million in gross proceeds. The offering includes a 30-day option for underwriters to purchase up to an additional 2,142,857 shares.

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

Key details

Public offering price per share$18
Total public offering amount$250.0M
Underwriting discounts and commissions per share$1
Total underwriting discounts and commissions$15.0M
Proceeds to issuer before expenses per share$16
Total proceeds to issuer before expenses$235.0M
IssuerArcus Biosciences, Inc.
UnderwriterJefferies
UnderwriterLeerink Partners
UnderwriterTD Cowen
UnderwriterEvercore ISI
UnderwriterMizuho

How RCUS stock reacted

Close before

$19.10

Oct 21, 2026

First close after

+1.36%

$19.36

5 trading days

-3.72%

$18.39

Since filing

-4.29%

$18.28

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Frequently asked questions

What did RCUS file with the SEC on Oct 22, 2026?

RCUS filed a 424B5 (Secondary offering). Arcus Biosciences, Inc. is offering 14,285,715 shares of common stock at $17.50 per share, raising approximately $250 million in gross proceeds. The offering includes a 30-day option for underwriters to purchase up to an additional 2,142,857 shares.

What does a secondary offering mean for RCUS 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 RCUS stock react to this filing?

RCUS closed at $19.10 before the filing and $19.36 on Oct 22, 2026 (+1.36%). Five trading days later: $18.39 (-3.72%).

Other RCUS SEC filings

  • 10-Q · SEC filingNov 4, 2026
  • 8-K · SEC filingNov 4, 2026
  • 8-K · Secondary offeringOct 23, 2026
  • 424B5 · Secondary offeringOct 21, 2026
  • 8-K · SEC filingOct 21, 2026
  • 8-K · SEC filingOct 20, 2026
  • 10-Q · SEC filingAug 5, 2026
  • 8-K · Guidance raiseAug 5, 2026
  • 8-K · SEC filingJun 12, 2026
  • 10-Q · SEC filingMay 5, 2026

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Source: SEC EDGAR filing 0001193125-26-428916. 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.