Backblaze, Inc. (BLZE) Institutional Ownership

Ownership Summary

Backblaze, Inc. (NASDAQ:BLZE) currently has 14 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• These investors collectively held 6.8% of the company's total shares outstanding in December 2025, down from 55.5% in September 2025.
• Quarterly data indicates a 25.54% shift in institutional share volume, and the annual owner count reflects a decrease of 88.43%.
• The latest 13F cycle for Backblaze reveals that of 14 total investors, 9 funds grew their exposure, whereas 4 reduced theirs and 1 made no changes.
• The aggregate institutional position in Backblaze now stands at 3.65Mn shares as of December 2025, after investors increased their holdings (up by 741.85K shares quarter on quarter which is down 19.57Mn shares year over year).
• VANGUARD GROUP INC continues to be the largest institutional holder of Backblaze as of December 31, 2025, with a position of 3.10Mn shares, representing 5.74% of the company's outstanding stock.
• Among the most significant buyers of Backblaze during December 2025 were VANGUARD GROUP INC (403.21K), Universal- Beteiligungs- und Servicegesellschaft mbH (150.00K), UBS Group AG (124.35K), Round Rock Advisors LLC (52.34K), Penbrook Management LLC (19.32K).
• Leading sellers of Backblaze stock in December 2025 included SG Americas Securities, LLC (14.29K), CWM, LLC (5.04K), True Wealth Design, LLC (216), NISA INVESTMENT ADVISORS, LLC (138).
• The top 10 institutional holders of Backblaze for the quarter ending December 2025 included VANGUARD GROUP INC (3.10Mn), UBS Group AG (173.57K), Universal- Beteiligungs- und Servicegesellschaft mbH (150.00K), Round Rock Advisors LLC (91.41K), Penbrook Management LLC (71.35K), Checchi Capital Advisers, LLC (31.07K), SG Americas Securities, LLC (13.94K), M&T BANK CORP (10.48K), CWM, LLC (3.72K), NISA INVESTMENT ADVISORS, LLC (2.06K).