Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001193125-25-101834
Filing Date
2025-04-29
Accepted
2025-04-29 07:31:12
Documents
3

Document Format Files

Seq Description Document Type Size
1 DEFA14A d946596ddefa14a.htm DEFA14A 11051
2 GRAPHIC g946596dsp050.jpg GRAPHIC 290292
3 GRAPHIC g946596dsp051.jpg GRAPHIC 187496
  Complete submission text file 0001193125-25-101834.txt   670436
Mailing Address 21 HICKORY DRIVE, SUITE 500 WALTHAM MA 02451
Business Address 21 HICKORY DRIVE, SUITE 500 WALTHAM MA 02451 617-819-2020
Sionna Therapeutics, Inc. (Filer) CIK: 0002036042 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-42504 | Film No.: 25882674
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)