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Brian G. Mason

CIK 1693841 · Pres. - SPX Transformer Sol. · last filed 2021-10-05

Brian G. Mason is a Pres. - SPX Transformer Sol. who has filed 21 SEC Form 4 insider transactions across 1 company since 2017. The most recent filing shows the insider had shares withheld for taxes covering $63.3K of SPXC on Oct 5, 2021. Across all open-market trades the lifetime net is −$2.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $14.3M across reported positions.

"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

$14.29M

Companies

1

Total Filings

21

Lifetime Open-Market Net

-$2.37M

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
SPXC Pres. - SPX Transformer Sol. 61,645 $231.87 $14.29M -$2.37M 21 2021-10-05

Recent Filings

21 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2021-10-05 SPXC Tax (F) −1,185 -$63.3K EDGAR
2021-10-01 SPXC Mixed — -$418.3K EDGAR
2021-09-27 SPXC Mixed — -$431.3K EDGAR
2021-03-03 SPXC Grant (A) +6,730 $0 EDGAR
2021-02-24 SPXC Mixed −1,926 -$206.1K EDGAR
2020-03-04 SPXC Tax (F) −583 -$24.4K EDGAR
2020-02-26 SPXC Tax (F) −518 -$26.1K EDGAR
2020-02-25 SPXC Mixed −1,244 -$161.2K EDGAR
2020-02-24 SPXC Grant (A) +6,761 $0 EDGAR
2019-12-20 SPXC Mixed — -$964.5K EDGAR
Showing 1–10 of 21
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Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.