6-K - Inventiva S.A.

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]: SEC Accession No. 0001171843-26-002648

Filing Date: 2026-04-22

Accepted: 2026-04-22 16:23:18

Documents: 2

Period of Report: 2026-04-22

Inventiva S.A. (Filer) CIK : 0001756594 (see all company filings) EIN. : 000000000 | State of Incorp.: I0 | Fiscal Year End: 1231 Type: 6-K | Act: 34 | File No.: 001-39374 | Film No.: 26884118 SIC : 2834 Pharmaceutical Preparations (CF Office: 03 Life Sciences)

1 | FORM 6-K | f6k_042226.htm | 6-K

2 | PRESS RELEASE | exh_991.htm | EX-99.1

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

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2026

Commission File Number: 001-39374

Inventiva S.A. (Translation of registrant's name into English)

50 rue de Dijon 21121 Daix France +33 3 80 44 75 00 (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F [ X ] Form 40-F [ ]

On April 22, 2026, the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. (c) Exhibit 99.1. Press release dated April 22, 2026 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, thereunto duly authorized. Inventiva S.A. (Registrant) Date: April 22, 2026 /s/ Andrew Obenshain Andrew Obenshain Chief Executive Officer

On April 22, 2026, the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. (c) Exhibit 99.1. Press release dated April 22, 2026

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, thereunto duly authorized.