Quick answer: three verified acquisitions closed or announced in the lower middle market between September 10 and September 18, 2026 — Apogee Enterprises’ ~$67M purchase of Latvian specialty-glass maker GroGlass, Taboola’s £19M take-private of UK adtech firm Dianomi, and COSCIENS Biopharma’s $15M acquisition of Nualtis Corp. Below, each deal plus a closer look at two of the buyers behind them.
Every deal is pulled directly from WhoBoughtWho’s tracked acquisition history, verified against its original source — no estimates presented as fact, no unsourced deals.
| Acquirer | Target | Deal size | Announced | Type |
|---|---|---|---|---|
| Apogee Enterprises | SIA Alzette (GroGlass) | ~$67.3M EV | Sep 18, 2026 | Strategic |
| Taboola | Dianomi plc | £19M / ~$25.65M | Sep 18, 2026 | Strategic |
| COSCIENS Biopharma | Nualtis Corp | $15M cash | Sep 10, 2026 | Strategic |
3 recent acquisitions
Deal
Apogee Enterprises, Inc. → SIA Alzette (GroGlass)
- Price
- ~€62.5M base (~$67.3M), plus up to €10M contingent consideration
- Status
- Closed · Sep 18, 2026
- Sector
- Specialty glass and acrylic coatings · Latvia
A 20-year-old Latvian manufacturer of anti-reflective and UV-blocking coated glass and acrylic — used in museum display cases, picture framing, and architecture — sold to Minneapolis-based Apogee, a public glass and architectural products manufacturer. GroGlass exports 99% of its output to over 50 countries.
Deal
Taboola → Dianomi plc
- Price
- £19M (64p per share, fully diluted)
- Status
- Announced · Sep 18, 2026
- Sector
- Digital advertising · United Kingdom
Taboola, the NASDAQ-listed content recommendation and native advertising network, agreed to acquire AIM-listed Dianomi, a financial-services-focused native advertising platform, in an all-cash recommended offer.
Deal
COSCIENS Biopharma Inc. → Nualtis Corp
- Price
- $15M cash
- Status
- Closed · Sep 10, 2026
- Sector
- Nutraceuticals / dietary supplements · United States
A Canadian nutraceutical and consumer health company expanding its US dietary-supplement footprint with an all-cash acquisition of Nualtis Corp.
Buyer spotlight
Buyer Spotlight
Apogee Enterprises
Strategic
A Minneapolis-based, NASDAQ-listed manufacturer of glass, architectural framing systems, and coated/laminated glass products across four segments (Architectural Framing Systems, Architectural Glass, Architectural Services, and Large-Scale Optical). The GroGlass deal is a bolt-on into high-margin specialty optical coatings adjacent to its core glazing business — Apogee has also acquired Kalwall Corporation and Structures Unlimited, another add-on tracked on WhoBoughtWho, showing a pattern of expanding via smaller specialty-materials acquisitions rather than large-scale M&A.
Buyer Spotlight
Taboola
Strategic
A publicly traded (NASDAQ: TBLA) content recommendation and native advertising network best known for the “around the web” widgets that appear on publisher sites. The Dianomi take-private adds a financial-services-focused advertising platform to Taboola’s stack — worth noting as a strategic buyer rather than a financial sponsor, since so much lower-middle-market activity is search-fund or PE-driven; this week’s deals skew unusually strategic, with all three buyers acquiring to bolt directly onto an existing operating business rather than as a standalone financial investment.
WhoBoughtWho tracks acquisitions like these as they’re announced — browse the full acquisition history, explore the private equity and search fund directories, or subscribe to WhoBoughtWho Weekly for verified deals delivered every week.