What was the operating margin for the quarter and the six‑month period, and how does it compare to prior periods?

Answer

The press‑release you quoted gives ProAssurance’s operating‑income* figures for the quarter ended June 30 2025 ( $26.8 million) and for the six‑month period ending on the same date ( $33.6 million).

However, to calculate an operating margin we need the denominator that represents the company’s total revenue (or, in the insurance context, typically “net premiums earned” or “total revenue” for the same period). The release does not disclose any revenue number for either the quarter or the six‑month period, and it also does not provide operating‑income or margin figures for the comparable prior‑period (e.g., Q2 2024 or the first half of 2024).

Because of those missing pieces, the operating‑margin percentages for:

Why the margin cannot be derived from the information provided

1. Operating margin = Operating income ÷ Revenue (or Net premiums earned).
   
   The release only tells us the numerator (operating income). The denominator is absent.

2. No prior‑period operating‑income or margin data are given.
   
   A comparison to “prior periods” (e.g., Q2 2024 or H1 2024) would require either:

   • the operating‑income numbers for those periods and the same revenue figures, or
     
   • the previously reported operating‑margin percentages.
     None of these are included in the excerpt you provided.

What you can do to obtain the operating‑margin figures

• Check the full earnings release (often posted on ProAssurance’s investor‑relations website or on the SEC’s EDGAR system). The complete filing typically includes a “Statement of Operations” that lists total revenue (or net premiums earned) and may even present the operating‑margin percentage directly.
• Look at the prior‑period earnings release (e.g., the Q2 2024 or H1 2024 results). Those documents will contain the comparable operating‑income and revenue numbers, allowing a year‑over‑year margin comparison.
• Calculate the margin yourself once you have the missing revenue numbers: [ \text{Operating Margin (\%)} = \frac{\text{Operating Income}}{\text{Revenue (or Net Premiums)}} \times 100 ]

Bottom line

Based solely on the excerpt you supplied:

• Operating margin for the quarter – cannot be determined.
• Operating margin for the six‑month period – cannot be determined.
• Comparison to prior periods – not possible because prior‑period figures are not included.

To answer the question definitively, you’ll need the missing revenue data (or a complete earnings statement) and the corresponding prior‑period numbers. If you can locate the full ProAssurance Q2 2025 earnings release or the SEC Form 10‑Q filing for the quarter, those documents will give you the exact operating‑margin percentages and the historical context needed for a proper comparison.