Vanguard Portfolio Management LLC filed an amended beneficial ownership statement with the SEC on October 30, 2026, disclosing a 6.22 percent stake in Fastly Inc as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: Vanguard Portfolio Management reported holding 9,911,206 shares of Fastly Inc common stock (CUSIP 31188V100).
  • Percent of class: The reported position represents 6.22% of Fastly's outstanding common stock.
  • Sole dispositive power: Vanguard Portfolio Management holds sole power to dispose of all 9,911,206 shares.
  • Sole voting power: Sole voting power is reported for 152,224 shares only; shared voting power is listed as zero.
  • Triggering date: The event requiring the filing occurred on September 30, 2026.
  • Filing is an amendment: This is Amendment No. 1 to a previously filed statement.

Vanguard's Reported Position in Fastly, an Edge Cloud Provider

According to the filing, Vanguard Portfolio Management LLC, organized in Pennsylvania and headquartered at 100 Vanguard Blvd, Malvern, PA 19355, reported beneficially owning 9,911,206 shares of common stock in Fastly Inc, a company whose principal executive offices are located at 475 Brannan Street, Suite 300, San Francisco, CA 94107. Fastly, which trades on NASDAQ:FSLY, provides edge cloud platform services. The filing identifies the reporting person as an investment adviser, designated by type code "IA."

The filing explains that the reported position encompasses securities held by Vanguard funds, or sleeves of those funds, over which Vanguard Portfolio Management LLC exercises dispositive power, as well as securities held by clients over which affiliated entities - specifically Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC - exercise dispositive and/or voting power. The filing further notes that the statement does not include securities, if any, beneficially owned by other Vanguard subsidiaries or affiliates whose ownership is disaggregated in accordance with SEC Release No. 34-39538 dated January 12, 1998.

On the question of beneficial receipt, the filing states that Vanguard Portfolio Management, including registered investment companies and other managed accounts, holds "the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein." It also states that no single other person's interest in the reported securities exceeds 5 percent. The filing was signed by My Trieu-Gatt, identified as Authorized Signatory and Head of Global Fund Administration, on October 30, 2026.

What Was Disclosed

Vanguard Portfolio Management LLC disclosed an amended beneficial ownership position of 9,911,206 shares of Fastly Inc common stock, equal to 6.22 percent of the class, with sole dispositive power over all shares and sole voting power over 152,224 shares, as of September 30, 2026.