Lockmasters announced in April 2025 that it had acquired Signals Defense, a Maryland supplier of radio-frequency and infrared shielding products whose offering includes proprietary window film.
The buyer’s investor, Dominus Capital, described the purchase as Lockmasters’ fifth add-on acquisition under its ownership. It combined the acquired shielding business with Lockmasters’ security hardware and training operations for government and commercial customers.
No purchase price or revenue contribution was disclosed in the April 2 announcement. The transaction broadens the window-film business story beyond solar control: the acquired products address signal protection. The release’s security-performance and standards claims require product-specific verification and are not independently established by this acquisition report.
Sources & reporting notes
- Lockmasters Announces Acquisition of Signals Defense Dominus Capital release via PR Newswire · Source dated April 2, 2025
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