Invesco DB Commodity Index Tracking Fund (DBC) Form 424B3 — Oct 21, 2026

Invesco DB Commodity Index Tracking Fund filed Prospectus Supplement No. 1 to its August 26, 2026 prospectus, disclosing that Principal Financial and Accounting Officer Kelli Gallegos of the managing owner began a leave of absence effective October 19, 2026. The Board of Managers appointed Lori Anello, a CPA who joined Invesco in 2018 and currently serves as Global Head of Operational Product Readiness, as Principal Financial and Accounting Officer beginning October 22, 2026. Anello holds treasury and principal financial officer roles across multiple Invesco ETF trusts, including Invesco QQQ Trust.

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