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SEIC Insider Trading & Form 4 Activity

SEI INVESTMENTS CO
Last filing: Oct 1, 2026·22 days ago
BEARISH · LAST 90 DAYS
0%
buyers
$0
0 buys
$21.9M
14 sells
-$21.9M
net selling
9
insiders
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ACTIVE SELLING CLUSTER

5 insiders sold a combined $9.3M of SEIC between Jul 28, 2026 and Aug 5, 2026.

Warner Mark Andrew, Peterson Michael, Guarino Carl, Mccarthy Kathryn, Mccabe Philip

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Net flow — last 12 months

Monthly net of insider buys minus sells. Green months indicate net buying; red months indicate net selling.

Most active insiders

Ranked by total transaction value over the last 90 days.

INSIDERBOUGHTSOLDNET
Peterson Michael
Executive Vice President
—
$6.7M
-$6.7M
Hicke Ryan
Chief Executive Officer
—
$4.2M
-$4.2M
West Alfred P JR
Insider
—
$3.5M
-$3.5M
Mccabe Philip
See Remarks
—
$3.2M
-$3.2M
Warner Mark Andrew
See Remarks*
—
$1.5M
-$1.5M
Mccarthy Kathryn
Director
—
$1.0M
-$1.0M
Guarino Carl
Director
—
$1.0M
-$1.0M
Romeo Carmen
Director
—
$549K
-$549K

Recent transactions

Every Form 4 transaction for SEIC, newest first.

SELL
West Alfred P JR · Insider
Tx Sep 30·Filed Oct 1·EDGAR ↗
5,483 sh @ $103.16
$566K
SELL
West Alfred P JR · Insider
Tx Sep 29·Filed Oct 1·EDGAR ↗
28,394 sh @ $103.40
$2.9M
SELL
Lane Michael · Executive Vice President
Tx Sep 22·Filed Sep 24·EDGAR ↗
2,400 sh @ $102.78
$247K
SELL
Hicke Ryan · Chief Executive Officer
Tx Sep 3·Filed Sep 8·EDGAR ↗
37,500 sh @ $110.71
$4.2M
EXERCISE
Hicke Ryan · Chief Executive Officer
Tx Sep 3·Filed Sep 8·EDGAR ↗
17,500 sh @ $48.47
$848K
EXERCISE
Hicke Ryan · Chief Executive Officer
Tx Sep 3·Filed Sep 8·EDGAR ↗
20,000 sh @ $64.43
$1.3M
EXERCISE
Romeo Carmen · Director
Tx Sep 1·Filed Sep 3·EDGAR ↗
5,000 sh @ $49.63
$248K
SELL
Romeo Carmen · Director
Tx Sep 1·Filed Sep 3·EDGAR ↗
5,000 sh @ $109.70
$549K
SELL
Peterson Michael · Executive Vice President
Tx Aug 28·Filed Sep 1·EDGAR ↗
37,500 sh @ $111.51
$4.2M
EXERCISE
Peterson Michael · Executive Vice President
Tx Aug 28·Filed Sep 1·EDGAR ↗
37,500 sh @ $56.54
$2.1M
SELL
Mccabe Philip · See Remarks
Tx Aug 5·Filed Aug 6·EDGAR ↗
5,043 sh @ $105.50
$532K
EXERCISE
Mccabe Philip · See Remarks
Tx Aug 5·Filed Aug 6·EDGAR ↗
5,043 sh @ $49.63
$250K
EXERCISE
Mccabe Philip · See Remarks
Tx Aug 4·Filed Aug 6·EDGAR ↗
9,957 sh @ $49.63
$494K
EXERCISE
Mccabe Philip · See Remarks
Tx Aug 4·Filed Aug 6·EDGAR ↗
15,000 sh @ $49.63
$744K
SELL
Mccabe Philip · See Remarks
Tx Aug 4·Filed Aug 6·EDGAR ↗
24,957 sh @ $105.04
$2.6M
SELL
Mccarthy Kathryn · Director
Tx Aug 3·Filed Aug 4·EDGAR ↗
10,000 sh @ $103.53
$1.0M
EXERCISE
Mccarthy Kathryn · Director
Tx Aug 3·Filed Aug 4·EDGAR ↗
5,000 sh @ $71.12
$356K
EXERCISE
Warner Mark Andrew · See Remarks*
Tx Jul 28·Filed Jul 30·EDGAR ↗
2,500 sh @ $64.43
$161K
EXERCISE
Warner Mark Andrew · See Remarks*
Tx Jul 28·Filed Jul 30·EDGAR ↗
5,000 sh @ $56.54
$283K
SELL
Warner Mark Andrew · See Remarks*
Tx Jul 28·Filed Jul 30·EDGAR ↗
2,300 sh @ $101.11
$233K
SELL
Warner Mark Andrew · See Remarks*
Tx Jul 28·Filed Jul 30·EDGAR ↗
5,300 sh @ $102.01
$541K
SELL
Warner Mark Andrew · See Remarks*
Tx Jul 28·Filed Jul 30·EDGAR ↗
7,400 sh @ $102.97
$762K
EXERCISE
Peterson Michael · Executive Vice President
Tx Jul 28·Filed Jul 30·EDGAR ↗
25,000 sh @ $55.73
$1.4M
SELL
Peterson Michael · Executive Vice President
Tx Jul 28·Filed Jul 30·EDGAR ↗
25,000 sh @ $102.05
$2.6M
EXERCISE
Guarino Carl · Director
Tx Jul 28·Filed Jul 30·EDGAR ↗
5,000 sh @ $49.63
$248K
SELL
Guarino Carl · Director
Tx Jul 28·Filed Jul 30·EDGAR ↗
10,000 sh @ $103.19
$1.0M
SELL
Sharma Sanjay · See Remarks*
Tx Jul 24·Filed Jul 28·EDGAR ↗
20,000 sh @ $99.33
$2.0M
EXERCISE
Sharma Sanjay · See Remarks*
Tx Jul 24·Filed Jul 28·EDGAR ↗
10,000 sh @ $71.12
$711K
TAX
Shah Sneha S. · See Remarks*
Tx Jul 24·Filed Jul 28·EDGAR ↗
3,746 sh @ $96.73
$362K
SELL
West Alfred P JR · Insider
Tx Jun 29·Filed Jun 29·EDGAR ↗
5,652 sh @ $87.18
$493K
SELL
West Alfred P JR · Insider
Tx Jun 29·Filed Jun 29·EDGAR ↗
1,680 sh @ $88.09
$148K
SELL
West Alfred P JR · Insider
Tx Jun 26·Filed Jun 29·EDGAR ↗
46,162 sh @ $87.21
$4.0M
SELL
West Alfred P JR · Insider
Tx Jun 26·Filed Jun 29·EDGAR ↗
3,838 sh @ $87.67
$336K
SELL
Doran William · Insider
Tx Jun 9·Filed Jun 11·EDGAR ↗
5,000 sh @ $90.50
$453K

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About SEIC insider trading data

Form 4 is the SEC filing required when an officer, director, or 10% owner of a public company buys or sells the company's stock. By law, these filings must be submitted within two business days of the trade. Tracenotes pulls every Form 4 filing for SEIC from EDGAR, parses it, and surfaces the activity on this page.

What insider buying tells you. Open-market purchases by insiders are widely studied as a meaningful signal. Unlike stock awards (which are compensation, not conviction), an executive spending their own money to buy shares of the company they run is a vote of confidence. Studies have found insider-buying clusters — three or more insiders buying within a short window — outperform the broader market over the following year.

What insider selling tells you. Selling is noisier. Many sales are pre-scheduled under SEC Rule 10b5-1 plans, which let insiders sell on a fixed schedule regardless of company news. We label these "10b5-1" so you can see them. Discretionary sales — sales not tied to a plan — are more meaningful, especially when multiple insiders sell in quick succession.

Tracenotes methodology. We scan EDGAR daily for new Form 4 filings, parse them into individual transactions, and detect clusters when three or more distinct insiders buy or sell within a 14-day window. The data on this page covers the last 12 months. For deeper analysis, Tracenotes also runs language-change detection on 10-K and 10-Q filings — that's our core product.

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Frequently asked questions

What is a Form 4 filing?

Form 4 is the SEC disclosure required when a company insider — an officer, director, or 10% owner — buys or sells the company's stock. By law these filings must be submitted within two business days of the trade.

Is insider buying SEIC always bullish?

Open-market purchases by insiders are widely viewed as a bullish signal because executives are spending their own money. Stock awards and option exercises are part of compensation and don't carry the same weight, which is why we treat them separately on this page.

What is a 10b5-1 trade?

A trade made under SEC Rule 10b5-1, which lets insiders pre-schedule sales weeks or months in advance. These sales execute on a fixed plan regardless of company news, so they're a weaker signal than discretionary sales. We label them with a "10b5-1" tag.

What is an insider cluster?

A cluster is when three or more distinct insiders buy or sell within a 14-day window. Clusters are studied as stronger signals than single trades because multiple people independently reach the same view. We surface active clusters on SEI INVESTMENTS CO (SEIC) when they form.

Where does SEIC insider trading data come from?

Every Form 4 filing for SEIC is sourced directly from SEC EDGAR. Tracenotes scans EDGAR daily, parses each Form 4 into individual transactions, and updates this page within hours of new filings.

Nothing on this page constitutes investment advice. Form 4 data is sourced from SEC EDGAR and provided for research purposes only.

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