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Who

Mark S. Peek

Director

Company insider

Files Form 4 as: Director, Mobility Global; Director, SentinelOne; Director, Workiva; Director, Trimble; co-President, Workday; CFO & Co-President, Bus Ops, Vmware; Senior Vice President and CAO, Amazon.com.

In numbers

Trades disclosed
324
Buys
15
Sells
81
Bought
$6.8M
Sold
$102.4M
Companies
7
Companies where not an officer
4
First trade
15 Feb 2006
Last trade
1 Sep 2026
Last filed
2 Sep 2026

Companies traded

Where they are an officer
WDAY WorkdayOfficer · Payments & Processors · last 17 Jan 20180 buys · 49 sells
VmwareOfficer · last 14 Feb 20120 buys · 16 sells
AMZN Amazon.comOfficer · E-Commerce & Marketplaces · last 15 Feb 20070 buys · 5 sells
Everywhere else they filed: board seats, 10% stakes, other companies
MBGL Mobility GlobalDirector · Business Services · last 1 Sep 20263 buys · 0 sells
S SentinelOneDirector · Cybersecurity · last 25 Jun 20265 buys · 0 sells
WK WorkivaDirector · Software · last 1 Jun 20260 buys · 0 sells
TRMB TrimbleDirector · Life-science tools · last 19 Sep 20257 buys · 11 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
03Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Sep 2026filed 2 Sep 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Code A—20,172 at $0.00filing
1 Sep 2026filed 2 Sep 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Code A—11,095 at $0.00filing
1 Sep 2026filed 2 Sep 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Code A—20,172 at $0.00filing
1 Sep 2026filed 2 Sep 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Code A—11,095 at $0.00filing
13 Aug 2026filed 13 Aug 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Bought$298K15,000 at $19.87filing
13 Aug 2026filed 13 Aug 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Bought$298K15,000 at $19.87filing
12 Aug 2026filed 13 Aug 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Bought$487K25,000 at $19.50filing
12 Aug 2026filed 13 Aug 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Bought$488K25,000 at $19.50filing
11 Aug 2026filed 13 Aug 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Bought$195K10,000 at $19.50filing
11 Aug 2026filed 13 Aug 2026MBGL Mobility GlobalBusiness ServicesSEC FORM 4 Bought$195K10,000 at $19.50filing
25 Jun 2026filed 26 Jun 2026S SentinelOneCybersecuritySEC FORM 4 Code A—4,746 at $0.00filing
25 Jun 2026filed 26 Jun 2026S SentinelOneCybersecuritySEC FORM 4 Code A—14,238 at $0.00filing
25 Jun 2026filed 26 Jun 2026S SentinelOneCybersecuritySEC FORM 4 Code A—4,746 at $0.00filing
25 Jun 2026filed 26 Jun 2026S SentinelOneCybersecuritySEC FORM 4 Code A—14,238 at $0.00filing
1 Jun 2026filed 3 Jun 2026WK WorkivaSoftwareSEC FORM 4 Code A—4,070filing
1 Jun 2026filed 3 Jun 2026WK WorkivaSoftwareSEC FORM 4 Code A—4,070filing
16 Dec 2025filed 18 Dec 2025S SentinelOneCybersecuritySEC FORM 4 Bought$596K40,000 at $14.89filing
30 Sep 2025filed 1 Oct 2025S SentinelOneCybersecuritySEC FORM 4 Code G—25,000 at $0.00filing
30 Sep 2025filed 1 Oct 2025S SentinelOneCybersecuritySEC FORM 4 Code G—6,250 at $0.00filing
30 Sep 2025filed 1 Oct 2025S SentinelOneCybersecuritySEC FORM 4 Code G—6,250 at $0.00filing

News

Sectors

Financials49
Health Care18
Technology5
Consumer Discretionary5
Industrials3
Not placed16

Buys in green, sells in red, by the company’s sector.

Related people

Mark S. GarfieldChief Accounting Officer · Chief Accounting Officer at Workday, filing Form 4 there in the last year
David A. Duffield10% owner · 10% owner at Workday, filing Form 4 there in the last year
Gerrit S. KazmaierPresident, Prod. and Tech. · President, Prod. and Tech. at Workday, filing Form 4 there in the last year
Aneel BhusriCEO · CEO at Workday, filing Form 4 there in the last year
Zane RoweChief Financial Officer · Chief Financial Officer at Workday, filing Form 4 there in the last year
Michael T. McCaulRepresentative, TX-10 · Also traded MBGL, WDAY and AMZN in the last 90 days
Donald J. TrumpPresident · Also traded MBGL and AMZN in the last 90 days
Sonalee Elizabeth ParekhChief Financial Officer · Also traded S in the last 90 days