Melissa Cox

CIK 1928974 · E.V.P., Chief Admin. Off. · last filed 2026-02-24

Melissa Cox is an E.V.P., Chief Admin. Off. who has filed 18 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing, for DTM, was dated Feb 24, 2026. Across all open-market trades the lifetime net is −$496.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.3M 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.

Disclosed Exposure

$2.26M

Companies

1

Total Filings

18

Lifetime Open-Market Net

-$496.8K

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
DTM	E.V.P., Chief Admin. Off.	17,372	$129.99	$2.26M	-$496.8K	16	2026-02-24

Recent Filings

18 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
2026-02-24	DTM	Grant (A)	—	$0	EDGAR
2026-02-19	DTM	Mixed	+5,779	-$695.1K	EDGAR
2026-02-03	DTM	Mixed	+1,182	-$148.6K	EDGAR
2026-01-30	DTM	Grant (A)	—	$0	EDGAR
2025-08-12	DTM	Sell (S)	−4,755	-$496.8K	EDGAR
2025-08-11	DTM	Notice (144/A)	−4,755	-$496.7K	EDGAR
2025-08-11	DTM	Notice (144)	−4,755	-$496.7K	EDGAR
2025-08-04	DTM	Mixed	+556	-$215.6K	EDGAR
2025-02-27	DTM	Mixed	+4,034	-$323.3K	EDGAR
2025-02-06	DTM	Mixed	+799	-$80.0K	EDGAR

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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.