Don Sullivan, a vice president at $CSW Industrials, Inc. ($CSW)**, sold 4,526 shares of company stock on August 5, 2026, according to a Form 4 filed with the SEC the same day. The shares were sold at $343.75 apiece, yielding total proceeds of $1,555,812.50. Following the transaction, Sullivan retained 17,041 shares.
The sale was an open-market transaction and marked Sullivan's sixteenth Form 4 disposal of $CSW stock. Across all of his open-market sales on the ticker, aggregate proceeds total approximately $3.83 million. No open-market purchases by Sullivan appear in the SEC filing record.
Sullivan's August sale was the largest single-day disposition in his trading history at $CSW by dollar value, exceeding his previous high of $1,246,631.76 from a sale of 4,136 shares on December 8, 2025. The August 5 transaction also occurred after a notable run-up in $CSW's share price. The stock closed at $273.26 on July 1 and rose to $349.31 by August 4, the session before the sale.
Sullivan was not the only $CSW insider reporting stock sales in 2026. Chief Executive Officer Joseph B. Armes executed four open-market sales between January and April, with transaction values ranging from approximately $328,640 to $446,685. Vice President Luke Alverson reported three sales between February and May. Chief Financial Officer James E. Perry filed one sale in early January. The lone insider purchase on $CSW in 2026 was a 300-share acquisition by Director Darron K. Ash on March 13, valued at $76,986.
On the congressional side, Representative Gilbert Cisneros, a Democrat, disclosed five purchases of $CSW stock between November 2025 and May 2026, on trade dates of November 6 and 18, 2025, and January 15, March 3, and May 18, 2026. Each disclosure carried a midpoint value of $1,001. Representative Josh Gottheimer, also a Democrat, reported a single purchase of $CSW on November 17, 2025, likewise at a $1,001 midpoint. Congressional filings report dollar amounts in bracketed ranges, so the midpoint figures are estimates rather than exact trade values.
$CSW Industrials operates in the building sector and had no reported insider cluster beyond the sales detailed above. Sullivan's August 5 filing carried the same date as the trade itself, indicating no delay between the transaction and its disclosure.