Mark E. Layton

CIK 1687210 · CFO and Secretary · last filed 2023-03-07

Mark E. Layton is a CFO and Secretary who has filed 9 SEC Form 4 insider transactions across 1 company since 2016. The most recent filing shows the insider had shares withheld for taxes covering $201.9K of TUSK on Mar 7, 2023. Across all open-market trades the lifetime net is −$491.0K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.4M 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.

Disclosed Exposure

$1.42M

Companies

1

Total Filings

9

Lifetime Open-Market Net

-$491.0K

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
TUSK	CFO and Secretary	418,985	$3.39	$1.42M	-$491.0K	9	2023-03-07

Recent Filings

9 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
2023-03-07	TUSK	Tax (F)	−36,375	-$201.9K	EDGAR
2022-03-11	TUSK	Sell (S)	−40,417	-$82.3K	EDGAR
2021-03-11	TUSK	Sell (S)	−55,789	-$291.0K	EDGAR
2020-03-04	TUSK	Grant (A)	+500,000	$0	EDGAR
2018-11-13	TUSK	Sell (S)	−1,136	-$30.8K	EDGAR
2018-03-07	TUSK	Sell (S)	−4,373	-$114.3K	EDGAR
2017-11-16	TUSK	Sell (S)	−925	-$17.6K	EDGAR
2017-02-23	TUSK	Grant (A)	+40,000	$0	EDGAR
2016-10-21	TUSK	Mixed	+18,000	$45.0K	EDGAR

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.