SEI INVESTMENTS CO (SEIC) Insider Trading & SEC Filings
Last SEC filing
SEI INVESTMENTS CO (SEIC) has filed 7 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-30. Insider sales over the same period: 11 transactions worth $12.56M. 2 Form 8-K material event filings were reported by SEIC in the last 90 days. 7 Form 144 notices of proposed sale were filed for SEIC stock. InsiderAlpha tracks every SEIC SEC filing - Form 4, Form 144, and 8-K - in real time, including Rule 10b5-1 plan detection.
About SEI INVESTMENTS CO (SEIC)
SEI INVESTMENTS CO trades under the ticker SEIC. InsiderAlpha tracks 69 primary SEC Form 4 filings from 17 reporting insiders for SEIC since 2024, sourced directly from SEC EDGAR.
| Sector | Financials insider trading |
|---|---|
| SIC classification | Security Brokers, Dealers & Flotation Companies (SIC 6211) |
| SEC CIK | 0000350894 |
90-Day SEC Filing Activity
| Insider sales (90d) | 11 ($12.56M) |
|---|---|
| Form 4 filings (90d) | 7 |
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 7 |
| Latest Form 4 filing | 2026-07-30 |
Recent SEIC Insider Transactions (Form 4)
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Michael Peterson | Executive Vice President | S - Open-market sale | 25.0K | $102.05 | $2.55M | SEC | |
| Mark Andrew Warner | See Remarks* | M - Option exercise | 2.5K | $64.43 | $161K | SEC | |
| Carl Guarino | Director | M - Option exercise | 5.0K | $49.63 | $248K | SEC | |
| Carl Guarino | Director | S - Open-market sale | 10.0K | $103.19 | $1.03M | SEC | |
| Carl Guarino | Director | M - Option exercise | 5.0K | $49.63 | $248K | SEC | |
| Michael Peterson | Executive Vice President | M - Option exercise | 25.0K | $55.73 | $1.39M | SEC | |
| Mark Andrew Warner | See Remarks* | M - Option exercise | 5.0K | $56.54 | $283K | SEC | |
| Mark Andrew Warner | See Remarks* | M - Option exercise | 5.0K | $56.54 | $283K | SEC | |
| Mark Andrew Warner | See Remarks* | S - Open-market sale | 2.3K | $101.11 | $233K | SEC | |
| Mark Andrew Warner | See Remarks* | S - Open-market sale | 5.3K | $102.01 | $541K | SEC | |
| Mark Andrew Warner | See Remarks* | S - Open-market sale | 7.4K | $102.97 | $762K | SEC | |
| Mark Andrew Warner | See Remarks* | M - Option exercise | 2.5K | $64.43 | $161K | SEC | |
| Sanjay Sharma | See Remarks* | M - Option exercise | 10.0K | $71.12 | $711K | SEC | |
| Sanjay Sharma | See Remarks* | M - Option exercise | 10.0K | $71.12 | $711K | SEC | |
| Sanjay Sharma | See Remarks* | S - Open-market sale | 20.0K | $99.33 | $1.99M | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for SEI INVESTMENTS CO (SEIC). Updated in real time as new filings are submitted to the SEC.
Most-Active SEIC Insiders - Last 90 Days
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Mark Andrew Warner | 11 | $2.42M |
| Carl Guarino | 5 | $1.53M |
| Sanjay Sharma | 5 | $3.41M |
| Alfred P. West Jr. | 4 | $5.00M |
| Michael Peterson | 3 | $3.94M |
Recent SEIC Form 8-K Material Events
- - Item 2.02, 7.01, 9.01 [SEC]
- - Item 5.07, 8.01, 9.01 [SEC]
- - Item 2.02, 7.01, 9.01 · Earnings · neutral [SEC]
SEI Investments Company reported its financial and operating results for the first quarter ended March 31, 2026 on April 22, 2026. The filing includes a press release and earnings presentation but does not contain explicit language indicating whether results beat or missed expect - - Item 7.01, 9.01 · Other · neutral [SEC]
SEI Investments Company furnished its Raymond James Institutional Investor Conference presentation dated March 2, 2026 as a Regulation FD disclosure. The presentation outlines the company's strategic priorities, operating model improvements, and forward-looking expectations regar
Recent SEIC Form 144 Notices of Proposed Sale
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
Recent Insider Filings
- - Mark Andrew Warner (See Remarks*)
- - Michael Peterson (Executive Vice President)
- - Carl Guarino (Director)
- - Sanjay Sharma (See Remarks*)
- - Sneha S. Shah (See Remarks*)
Form 4 Transaction Code Reference
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in SEIC insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
SEIC Insider Trading - FAQ
- What is the latest insider trade for SEIC?
- SEI INVESTMENTS CO (SEIC) had 7 insider filings in the last 90 days, with the most recent on 2026-07-30. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
- How many insiders are buying SEIC stock?
- 0 insider purchases of SEIC were filed in the last 90 days.
- How many insiders are selling SEIC stock?
- 11 insider sales of SEIC were filed in the last 90 days, totaling $12.56M.
- Where can I see SEIC SEC filings (Form 4, 10-K, 10-Q, 8-K)?
- This page tracks SEIC Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Learn More
- What is SEC Form 4?
- How to read insider buying signals
- Rule 10b5-1 trading plans explained
- The cluster buying signal
Open the live SEIC dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.