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AI brief of an SEC Form 8-K · Mistras Group, Inc. (MG)

Mistras Group agrees to be acquired by H.I.G. Capital for $20.35 per share in cash

Mixed Impact 5 of 5 m&a Written later

Mistras Group, Inc. (NYSE: MG) agreed on September 17, 2026 to be acquired by affiliates of H.I.G. Capital for $20.35 per share in cash, an enterprise value of approximately $866 million including debt. The price represents a premium of approximately 8% and 13% to the company's 30- and 90-day volume-weighted average share prices, and the stock would stop trading on the NYSE after the deal closes, which is expected in late 2026 or early 2027. Completion requires stockholder approval and regulatory clearances, and a 40-day go-shop period runs until October 27, 2026.

Key points

  • Merger consideration of $20.35 per share in cash, with stock options, RSUs and PRSUs also converted to cash payments
  • Premium of approximately 8% and 13% to the 30- and 90-day VWAP for the period ended September 17, 2026
  • Company termination fee of approximately $27.5 million; Parent termination fee of approximately $49.9 million
  • Go-shop period ends 11:59 p.m. Eastern Time on October 27, 2026; voting and support agreements cover approximately 31% of common stock

The filing

CompanyMistras Group, Inc. (MG)
Form8-K, current report
Filed with the SECSep 18, 2026, 4:05 PM ET
Accession number0001140361-26-037107

Items reported: 1.01 Material Definitive Agreement5.02 Director / Officer Change7.01 Regulation FD Disclosure8.01 Other Events

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 10:08 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on September 18, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.