As of the latest Form 4 filed Jun 29, 2026.
What SEI Investments Company insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 16 most recent filings for SEIC.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-29 | 2026-06-29 | WEST ALFRED P JR Insider | SSale | −1.68K | $88.09 | $148K | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-29 | WEST ALFRED P JR, Insider | SSale | −5.65K | $87.18 | $493K | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-26 | WEST ALFRED P JR, Insider | SSale | −3.84K | $87.67 | $336K | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-26 | WEST ALFRED P JR, Insider | SSale | −46.2K | $87.21 | $4.03M | No | Form 4 ↗ |
| 2026-06-11 | 2026-06-09 | DORAN WILLIAM Director | SSale | −5.00K | $90.50 | $453K | No | Form 4 ↗ |
| 2026-04-30 | 2026-04-28 | Warner Mark Andrew In Remarks | SSale | −4.00K | $91.16 | $365K | No | Form 4 ↗ |
| 2026-04-30 | 2026-04-28 | Warner Mark Andrew, In Remarks | MExercise | +4.00K | $48.47 | $194K | No | Form 4 ↗ |
| 2026-04-24 | 2026-04-23 | McCabe Philip See Remarks | SSale | −15.0K | $91.82 | $1.38M | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Sharma Sanjay See Remarks* | SSale | −1.56K | $90.73 | $141K | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Sharma Sanjay, See Remarks* | SSale | −23.4K | $90.08 | $2.11M | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Sharma Sanjay, See Remarks* | MExercise | +12.5K | $49.63 | $620K | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Sharma Sanjay, See Remarks* | MExercise | +12.5K | $49.63 | $620K | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Peterson Michael EXECUTIVE VICE PRESIDENT | SSale | −10.0K | $90.00 | $900K | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Peterson Michael, EXECUTIVE VICE PRESIDENT | MExercise | +10.0K | $48.47 | $485K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | Hicke Ryan CHIEF EXECUTIVE OFFICER | FTax | −4.35K | $77.21 | $336K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-18 | Denham Sean Executive VP, CFO, COO | FTax | −7.67K | $78.77 | $604K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also SEIC’s full analysis or the market-wide insider trading feed. The tabs above jump to SEIC’s other SEC data.
Source: SEC Form 4 filings for SEIC, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.