Wednesday, September 16, 2026Latest filing Sep 14, 2026

MTZ Congressional Stock Trades

MasTec, Inc. Common Stock

Last disclosed trade Aug 21

Every disclosed trade in MTZ by members of Congress under the STOCK Act, parsed by Coldpine. Informational only, sourced from public filings. Not investment advice.

Sample · the intelligence layer

Coldpine signal scoreA 0-1 composite from four weighted factors: disclosure speed, trade size, cluster activity (multiple members buying the same name), and the member’s track record. ≥ 0.65 is the high-conviction tier; ≥ 0.50 is moderate. Trades from trust-managed members are penalized (× 0.2 multiplier). It’s research, not a recommendation.

Markwayne Mullin · Sold $MTZ · Dec 18 · $15K–$50K

0.38LOW
Disclosure speedx 0.250.30
Trade sizex 0.250.50
Cluster activityx 0.150.00
Track recordx 0.35default0.50

Every disclosed trade in the database gets this treatment: a four-factor score and a written read from Coldpine’s AI-based analysis. Informational only, not investment advice. Create a free account for every scored trade →

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4
Disclosed trades
1
Buys
3
Sells
2
Members trading

The record on $MTZ

Coldpine has parsed 4 disclosed trades in $MTZ by 2 members of Congress, drawn from 3 periodic transaction reports dated Dec 18, 2025 through Aug 21, 2026. That is 1 trade from House members and 3 trades from senators, all filed by Republicans.

Of the 4 trades with a known filing lag, every one was reported inside the STOCK Act's 45-day window. The median lag was 26 days. The longest was 26 days: a $MTZ sale by Markwayne Mullin dated Feb 4, 2026, disclosed Mar 2, 2026. How late filing is measured across all of Congress is in the late-filers study.

2 of the 3 trades that list an account holder (67%) were reported under a spouse, dependent child, or joint account rather than the member directly.

Thomas H. Kean filed the most $MTZ purchases (1), and Markwayne Mullin the most sales (3).

Members who trade MTZ

Recent disclosed trades in MTZ

DateMemberTypeAmount
Aug 21Thomas H. Kean(NJ)buy$1K–$15K
Feb 4Markwayne Mullin(OK)sell$15K–$50K
Dec 18Markwayne Mullin(OK)sell$15K–$50K
Dec 18Markwayne Mullin(OK)sell$15K–$50K

Data sourced from public STOCK Act disclosures. Coldpine is a publisher of intelligence on congressional disclosures, not an investment adviser. See full history and scores, free with an account →