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Who

Tammy L. Martin

General Counsel and Secretary

Company insider

Files Form 4 as: General Counsel and Secretary, Castellum; Chief Administrative Officer, Mobilepro.

In numbers

Trades disclosed
9
Buys
2
Sells
0
Bought
$2,216
Sold
$0
Companies
2
Companies where not an officer
0
First trade
8 Feb 2006
Last trade
1 Oct 2026
Last filed
1 Oct 2026

Companies traded

Where they are an officer
CTM CastellumOfficer · Professional Services · last 1 Oct 20262 buys · 0 sells
MobileproOfficer · last 29 Apr 20090 buys · 0 sells

Activity over time

1 Jun – 1 Oct
01Jun 26Jul 26Aug 26Sep 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Oct 2026filed 1 Oct 2026CTM CastellumProfessional ServicesSEC FORM 4 Bought$7471,396 at $0.5352filing
1 Jul 2026filed 2 Jul 2026CTM CastellumProfessional ServicesSEC FORM 4 Bought$7361,202 at $0.612filing
1 Jul 2026filed 2 Jul 2026CTM CastellumProfessional ServicesSEC FORM 4 Bought$7331,202 at $0.61filing
31 Mar 2026filed 31 Mar 2026CTM CastellumProfessional ServicesSEC FORM 4 Code A$6041,329 at $0.4544filing
31 Mar 2026filed 31 Mar 2026CTM CastellumProfessional ServicesSEC FORM 4 Code A$5981,329 at $0.45filing
29 Apr 2009filed 1 May 2009Mobileprooption or derivativeSEC FORM 4 Code A—4,000,000 at $0.00filing
26 May 2008filed 28 May 2008Mobileprooption or derivativeSEC FORM 4 Code A—4,000,000 at $0.00filing
27 Aug 2007filed 29 Aug 2007Mobileprooption or derivativeSEC FORM 4 Code J$30K3,000,000 at $0.01filing
8 Feb 2006filed 14 Feb 2006Mobileprooption or derivativeSEC FORM 4 Code A$115K500,000 at $0.23filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Industrials2

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

Related people

Andrew MerrimanChief Operating Officer · Chief Operating Officer at Castellum, filing Form 4 there in the last year
David T. BellChief Financial Officer · Chief Financial Officer at Castellum, filing Form 4 there in the last year
Glen R. IvesPresident · President at Castellum, filing Form 4 there in the last year
Charles Thomas McMillenDirector · Director at Castellum, filing Form 4 there in the last year