SPENCER DAVIDSON

CIK 1215920 · President & CEO · last filed 2026-01-05

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$5.33M

Companies

2

Total Filings

121

Lifetime Open-Market Net

-$12.82M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
GAMpB 190,874 $24.77 $4.73M -$12.12M 112 2026-01-05
MRX Director 9,722 $61.96 $602.4K -$698.7K 8 2012-05-17

Recent Filings · Page 12 of 13

121 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2010-12-21 GAMpB Buy (P) +600 $14.9K EDGAR
2010-12-15 GAMpB Buy (P) +1,304 $32.4K EDGAR
2010-12-15 GAMpB Buy (P) +637 $15.8K EDGAR
2010-05-20 MRX Grant (A) $0 EDGAR
2009-06-01 MRX Buy (P) +5,000 $77.5K EDGAR
2009-05-21 GAMpB Buy (P) +5,800 $102.9K EDGAR
2009-05-21 MRX Grant (A) $0 EDGAR
2009-01-21 GAMpB Buy (P) +6,600 $99.0K EDGAR
2008-11-26 GAMpB Buy (P) +6,600 $99.0K EDGAR
2008-05-22 MRX Grant (A) $0 EDGAR
Showing 111120 of 121
Page 12 of 13
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.