Repligen 8-K: Q3 2025 results announced; Exhibit 99.1 furnished

Rhea-AI Filing Summary

Repligen Corporation filed an 8-K stating it announced financial results for the third quarter ended September 30, 2025. The company furnished the full text of the announcement as Exhibit 99.1, a press release dated October 28, 2025.

The information provided under Item 2.02 is furnished and is not deemed “filed” under Section 18 of the Exchange Act, nor incorporated by reference, except as expressly set forth by specific reference.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

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Accepted by SEC EDGAR 10/28/2025 - 07:33 AM Learn about SEC filing dates

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 28, 2025

REPLIGEN CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Delaware			000-14656	04-2729386
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
41 Seyon Street
Waltham, Massachusetts				02453
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: (781) 250-0111

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, par value $0.01 per share		RGEN		Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 28, 2025, Repligen Corporation announced its financial results for the third quarter ended September 30, 2025. The full text of the press release issued in connection with the announcement is attached as Exhibit 99.1 to this Current Report on Form 8-K.

The information in this Form 8-K and the exhibit attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

99.1		Press Release by Repligen Corporation, dated October 28, 2025
104		Cover page from this Current Report on Form 8-K, formatted in Inline XBRL

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		REPLIGEN CORPORATION
Date:	October 28, 2025	By:	/s/ Olivier Loeillot
			Olivier Loeillot
			President and Chief Executive Officer

FAQ

What did Repligen (RGEN) announce in this 8-K?

Repligen announced its financial results for the third quarter ended September 30, 2025, via a press release furnished as Exhibit 99.1.

Which 8-K item covers Repligen’s update?

The results are furnished under Item 2.02 – Results of Operations and Financial Condition.

Is the information deemed filed under the Exchange Act?

No. It is furnished and not deemed “filed” under Section 18, nor incorporated by reference unless specifically stated.

Where can I find detailed Q3 2025 figures for Repligen (RGEN)?

Detailed figures are in the press release furnished as Exhibit 99.1, dated October 28, 2025.

Who signed the 8-K for Repligen and in what capacity?

Olivier Loeillot, President and Chief Executive Officer, signed the report on October 28, 2025.

On which exchange does Repligen trade and under what symbol?

Repligen’s common stock trades on the Nasdaq Global Select Market under the symbol RGEN.