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CIK 0000350894 · Large accelerated filer

SEI INVESTMENTS CO

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Ticker
SEIC
Exchange
Nasdaq
Industry
Security Brokers, Dealers & Flotation Companies
FY end
Dec 31
Incorporated
PA
Entity type
operating
EIN
231707341
Phone
6106761000
Business address
1 FREEDOM VALLEY DRIVE, OAKS, PA, 19456-1100
Former names
SEI CORP
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$13,512,522
in 6 filings

Net −$13,512,522. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Peterson Michael −$4.2M Executive Vice President sold 65% of stake
  2. Hicke Ryan −$4.2M Chief Executive Officer sold 16% of stake
  3. WEST ALFRED P JR −$3.5M Chairman Emeritus sold <1% of stake
  4. DORAN WILLIAM −$882K Director sold 1% of stake
  5. ROMEO CARMEN −$549K Director sold <1% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-07-28 Warner Mark Andrew See Remarks* Sale −5,300 $102.01 $541K 8,321
2026-07-28 Warner Mark Andrew See Remarks* Sale −7,400 $102.97 $762K 921
2026-07-28 Warner Mark Andrew See Remarks* Option exercise · Option to Purchase Common Stock −2,500 0
2026-07-28 Warner Mark Andrew See Remarks* Option exercise · Option to Purchase Common Stock −2,500 0
2026-07-28 Warner Mark Andrew See Remarks* Option exercise · Option to Purchase Common Stock −5,000 0
2026-07-28 Warner Mark Andrew See Remarks* Option exercise · Option to Purchase Common Stock −5,000 0
2026-07-28 Peterson Michael Executive Vice President Option exercise +25,000 $55.73 $1.4M 45,148
2026-07-28 Peterson Michael Executive Vice President Sale −25,000 $102.05 $2.6M 20,148
2026-07-28 Peterson Michael Executive Vice President Option exercise · Option to Purchase Common Stock −25,000 0
2026-07-28 GUARINO CARL Director Option exercise +5,000 $49.63 $248K 23,308
2026-07-28 GUARINO CARL Director Option exercise +5,000 $49.63 $248K 28,308
2026-07-28 GUARINO CARL Director Sale −10,000 $103.20 $1.0M 18,308
2026-07-28 GUARINO CARL Director Option exercise · Option to Purchase Common Stock −5,000 0
2026-07-28 GUARINO CARL Director Option exercise · Option to Purchase Common Stock −5,000 0
2026-07-24 Sharma Sanjay See Remarks* Option exercise +10,000 $71.12 $711K 49,828.99
2026-07-24 Sharma Sanjay See Remarks* Option exercise +10,000 $71.12 $711K 59,828.99
2026-07-24 Sharma Sanjay See Remarks* Sale −20,000 $99.33 $2.0M 39,828.99
2026-07-24 Sharma Sanjay See Remarks* Option exercise · Option to Purchase Common Stock −10,000 0
2026-07-24 Sharma Sanjay See Remarks* Option exercise · Option to Purchase Common Stock −10,000 0
2026-07-24 Shah Sneha S. See Remarks* Shares withheld for taxes −3,746 $96.73 $362K 14,092

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