Keene Building Products acquires Mar-flex Waterproofing & Building Products

Keene Building Products agreed to acquire Mar-flex Waterproofing & Building Products. Reported deal value: Undisclosed. Status: Announced. Sector: Waterproofing and Building Products. Target headquarters context: Carlisle, Ohio, United States.

This page summarizes publicly available information about the transaction as of 2026-02-11. Figures and status may change as filings and press coverage update.

OnMark Capital , a boutique buy-side M&A advisory firm providing outsourced corporate development and acquisition execution services to family offices, corporations, and private equity firms, announced today that it successfully advised its client, Keene , Inc. , on the acquisition of Mar- Flex Waterproofing & Building Products , a leading manufacturer of below-grade waterproofing systems