Martha Z. Carnes

Board Director

Director

US·SEC (Form 4)

Matrix Service Co Matrix Service Co Core Laboratories N V Core Laboratories Inc. /DE/

Total declarations

Companies

▲ Purchases (0 ops.)

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▼ Sales (0 ops.)

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Latest filing published 07 Apr 2026 for Core Laboratories Inc. /DE/. Read the official filing

Insider track record

Disclosed buys

Disclosed sells

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

No signal scores available.

Martha Z. Carnes: trading record in brief

Filings by Martha Z. Carnes span 3 companies, the busiest being Matrix Service Co, Core Laboratories Inc. /DE/ and Core Laboratories N V. The record holds 10 filings, for trades running from 2 November 2021 to 1 April 2026.

The filings describe grants, exercises and other transfers rather than trades on the open market. Grants and option exercises follow pay plans set in advance, so they reveal less about an insider's own view than a purchase made with personal money.

The record was last updated on 7 April 2026 with an option exercise in Core Laboratories Inc. /DE/. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 1 day. Section 16 rules allow two business days to file each Form 4. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.