REPLIGEN CORP 8-K

What Happened

• Repligen Corporation (RGEN) announced its financial results for the fourth quarter and full year ended December 31, 2025 in a press release dated February 24, 2026. The announcement was reported on Form 8-K (Item 2.02 — Results of Operations and Financial Condition) and the press release is attached as Exhibit 99.1 to the filing.

Key Details

• Date of filing/press release: February 24, 2026.
• Reporting period: Q4 and full year ended December 31, 2025.
• Exhibit attached: Press release as Exhibit 99.1 (the Form 8-K notes the exhibit and related information are not “filed” for purposes of Section 18 of the Exchange Act and are not incorporated by reference).
• Form 8-K signed by Olivier Loeillot, President and Chief Executive Officer, on February 24, 2026.

Why It Matters

• This 8-K signals that Repligen released its latest earnings and operational results; investors should read the attached press release for revenue, earnings, guidance, and other performance metrics that could affect the stock.
• Because the filing itself does not include the numeric results, the press release (Exhibit 99.1) is the primary source for the detailed quarterly and annual figures investors need to evaluate recent earnings, revenue trends and company outlook.