Filed under Rule 497(k)
Registration No. 002-83631

VALIC Company I

Systematic Growth Fund

(the “Fund”)

Supplement dated July 31, 2026, to the Fund’s Summary Prospectus,

dated October 1, 2025, as supplemented to date

At a meeting held on April 21, 2026, the Board of Directors (the “Board”) of VALIC Company I (“VC I”) approved certain changes to the Fund’s principal investment strategies, including the adoption of a new non-fundamental 80% investment policy, as set out below. The investment objective and principal strategies of the Fund may be changed by the Board without investor approval. Investors will be given at least 60 days’ written notice in advance of any such changes. VC I intends to file an amendment to its registration statement with the U.S. Securities and Exchange Commission (“SEC”) reflecting these changes. The filing is subject to review by the SEC staff and is expected to become effective on or about September 29, 2026 (the “Effective Date”).

Upon the Effective Date, the first paragraph in the subsection of the Summary Prospectus entitled “Principal Investment Strategies of the Fund” is deleted in its entirety and replaced with the following:

The Fund attempts to achieve its investment objective by investing, under normal circumstances, at least 80% of its net assets in securities of growth companies. For purposes of the Fund’s 80% investment policy, a company is considered to be a growth company if it: (i) issues securities that are represented in a third-party growth-style index or that are classified as a growth company by a third-party vendor; or (ii) meets a relevant equity market measurement in at least one “growth metric” similar to those commonly used by third-party index providers or third-party vendors in growth classifications, such as earnings growth, price-to-earnings or sales growth, among others.

The Fund invests primarily in equity securities of issuers included in the Russell 1000^® Growth Index (the “Index”) at the time of purchase. The Index is comprised of U.S. large- and mid-cap companies that exhibit certain growth characteristics, as defined by the index provider. As of June 30, 2026, the median stock by market capitalization in the Index was approximately $28.249 billion, and the largest stock was approximately $4.86 trillion. The size of the companies in the Index changes with market conditions and the composition of the Index. The size of the companies in which the Fund invests may be outside of this capitalization range and may change with market conditions as well.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.