Who owns Integral Ad Science (IAS)?
Integral Ad Science is owned by Novacap, a North American private equity firm. Novacap agreed in September 2025 to take IAS private in an all-cash deal valuing it at about $1.9 billion, paying $10.30 per share, and the deal closed in December 2025, when IAS stock stopped trading on Nasdaq.
Short answer · AdTech Sumo
IAS is one of the two big independent ad verification companies, measuring viewability, brand safety and invalid traffic for advertisers and publishers. It had been listed on Nasdaq since 2021, having previously been owned by private equity firm Vista Equity Partners.
Its main rival, DoubleVerify, remains publicly listed. Taking IAS private is part of a broader pattern of take-private deal deals among ad tech firms whose shares lagged after the 2021 peak.