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RHYS J BEST

CIK 1218738 · Chairman & CEO · last filed 2026-05-14

RHYS J BEST is a Chairman & CEO who has filed 97 SEC Form 4 insider transactions across 8 companies since 2007. The most recent filing, for ACA, was dated May 14, 2026. Across all open-market trades the lifetime net is +$1.5M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $17.2M across reported positions. 21 SEC filings were submitted jointly with TRINITY INDUSTRIES INC.

"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

$17.17M

Companies

8

Total Filings

97

Lifetime Open-Market Net

$1.49M

Filer Profile

Reported Address
500 N. AKARD ST., SUITE 400
DALLAS, TX 75201
Related Filers
TRINITY INDUSTRIES INC — 21 joint filings, latest 2018-05-09
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
ACA Director 60,863 $146.69 $8.93M $119.8K 10 2026-05-14
TPL Director 3,299 $343.11 $1.13M $126.2K 6 2026-01-07
CMC Director 87,664 $65.73 $5.76M $386.5K 19 2021-11-15
MRC GLOBAL INC. (MRC) Delisted Director 174,401 $13.78 $2.40M $270.5K 14 2021-05-10
Coterra Energy Inc. (COG) Delisted Director 175,004 $22.25 $3.89M $377.8K 17 2021-02-19
TRN Director 48,223 $27.99 $1.35M $139.3K 14 2018-05-09
EnLink Midstream Partners, LP (XTEX) Delisted Director 57,588 — — $70.4K 14 2013-07-02
LONE STAR TECHNOLOGIES INC (LSS) Delisted Chairman & CEO 0 — — $0 3 2007-06-14

Recent Filings

97 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
2026-05-14 ACA Grant (A) +1,087 $0 EDGAR
2026-01-07 TPL Grant (A) +554 $0 EDGAR
2025-05-15 ACA Grant (A) +1,581 $0 EDGAR
2025-03-05 ACA Buy (P) +1,500 $119.8K EDGAR
2025-01-06 TPL Grant (A) +132 $0 EDGAR
2024-05-09 ACA Grant (A) +1,485 $0 EDGAR
2024-01-03 TPL Grant (A) +80 $0 EDGAR
2023-11-20 TPL Buy (P) +75 $126.2K EDGAR
2023-05-11 ACA Grant (A) +1,906 $0 EDGAR
2023-01-03 TPL Grant (A) +54 $0 EDGAR
Showing 1–10 of 97
Page 1 of 10
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.