Supplement to Definitive Proxy Statement Filed on April 14, 2025
For the Annual Meeting of Shareholders to be Held on May 28, 2025
This Supplement is dated May 7, 2025
On April 14, 2025, SEI Investments Company (“SEI,” “the Company,” “we,” or “our”) filed a definitive proxy
statement (the “Proxy Statement”) with the Securities and Exchange Commission in connection with its virtual-only
2025 Annual Meeting of Shareholders (the “Annual Meeting”) to be held on May 28, 2025.
SEI is providing this supplement to correct an inadvertent error in the QR Code contained in the Notice of
Annual Shareholders Meeting on page 2 of the Proxy Statement. The corrected QR Code is set forth below.
In addition, the Proxy Statement contained inadvertent omissions of language on pages 14 and 16, which are
corrected below by adding the bolded and underlined language to the specified paragraphs:
On page 14, the paragraph headed “Qualifications” in the biography of director Jonathan A. Brassington is
corrected as follows:
Qualifications
Mr. Brassington has deep expertise in the use of digital technologies to transform the wealth management
sector gained from his experience providing strategic advisory and technology transformation services to
many asset and wealth management firms, including five of the seven largest global asset managers. He has
also advised venture and private equity firms on new and existing fintech investments, giving him insight
into the opportunities and challenges faced by SEI’s investment and wealth management business, as
well as the Company’s clients.
On page 16, the paragraph in the biography of director and Chief Executive Officer Ryan A. Hicke headed
“Qualifications” is corrected as follows:
Qualifications
Mr. Hicke’s history and experience across the Company expose him to the needs and challenges of our
clients on a daily basis, while sitting on our Executive team for many years has given him insight into
strategically managing and running the Company.
This supplement should be read in conjunction with the Proxy Statement and does not modify or update any
disclosures presented in the Proxy Statement. In addition, this supplement does not reflect events occurring after the
date of the Proxy Statement or modify or update disclosures that may have been affected by subsequent events.