---
schema_version: "secwatch.filing_event.v1"
accession: "0000350894-23-000083"
form_type: "8-K"
ticker: "SEIC"
cik: "0000350894"
company_name: "SEI INVESTMENTS CO"
filed_at: "2023-10-25T23:59:59+00:00"
generated_at: "2026-06-09T11:57:40.507459+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# SEI Investments appoints Stephanie D. Miller to Board, effective Oct. 24, 2023

## Summary
- Miller fills vacancy from Sarah Blumenstein not standing for re-election at 2023 Annual Meeting.
- Serves on Audit and Legal & Regulatory Oversight Committees; term expires at 2024 Annual Meeting.
- Granted options to purchase 7,500 shares at $54.51; vesting tied to adjusted EPS thresholds of $5.00 and $6.25.
- Granted 766 RSUs vesting on October 24, 2026, subject to continued board service.

## SEC filing metadata
- accession: 0000350894-23-000083
- form_type: 8-K
- ticker: SEIC
- cik: 0000350894
- company_name: SEI INVESTMENTS CO
- filed_at: 2023-10-25T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/350894/000035089423000083/0000350894-23-000083-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/350894/000035089423000083/seic-20231024.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000350894-23-000083
- JSON: https://secwatch.observer/filing/0000350894-23-000083.json
- Plain text: https://secwatch.observer/filing/0000350894-23-000083.txt

## Key facts
- Executive change
  Sarah W. Blumenstein departed as Director at SEI INVESTMENTS CO.
  - Action: not standing for re-election
  - Role: Director
  source text: thereby filling the vacancy on the Board that resulted from Sarah W. Blumenstein not standing for re-election at the 2023 Annual Meeting of the Company’s Shareholders.
  evidence_url: https://www.sec.gov/Archives/edgar/data/350894/000035089423000083/0000350894-23-000083-index.htm
- Executive change
  Stephanie D. Miller was appointed as Director at SEI INVESTMENTS CO.
  - Action: appointed
  - Role: Director
  source text: On October 24, 2023, the Company’s Board of Directors (the “Board) appointed Stephanie D. Miller to the Board, effective immediately, thereby filling the vacancy on the Board that resulted from Sarah W. Blumenstein not standing for re-election at the 2023 Annual Meeting of the Company’s Shareholders.
  evidence_url: https://www.sec.gov/Archives/edgar/data/350894/000035089423000083/0000350894-23-000083-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.