0001956827 2026-03-20 2026-03-20 0001956827 1 2026-03-20 2026-03-20 0001956827 2 2026-03-20 2026-03-20 0001956827 3 2026-03-20 2026-03-20 0001956827 4 2026-03-20 2026-03-20 0001956827 5 2026-03-20 2026-03-20 iso4217:USD pure shares S-8 S-8 EX-FILING FEES 0001956827 Abivax S.A. N/A false false false false false S-8 Abivax S.A. Equity Ordinary Shares, par value euro 0.01 per share, Free Share Plan AGA 2025-6 true 25000 122.73 3068250.00 0.0001381 423.73 Equity Ordinary Shares, par value euro 0.01 per share, Free Share Plan AGA 2025-7 true 925000 122.73 113525250.00 0.0001381 15677.84 Equity Ordinary Shares, par value euro 0.01 per share, Free Share Plan AGA 2025-8 true 4000 122.73 490920.00 0.0001381 67.80 Equity Ordinary Shares, par value euro 0.01 per share, Free Share Plan AGA 2026-1 true 22500 122.73 2761425.00 0.0001381 381.35 Equity Ordinary Shares, par value euro 0.01 per share, Share Warrants Plan BSA-2026-1 true 13345 114.46 1527468.70 0.0001381 210.94 121373313.70 16761.66 0.00 16761.66 These shares may be represented by the ADSs of the Registrant. Each ADS represents the right to receive one Ordinary Share of the Registrant. ADSs issuable upon deposit of the Ordinary Shares registered hereby were registered pursuant to the Registrant's Registration Statement on Form F-6 (File No. 333-274845). Pursuant to Rule 416(a) promulgated under the Securities Act, this Registration Statement shall also cover any additional Ordinary Shares that become issuable under the Registrant's Free Share Plan AGA 2025-6 by reason of any stock dividend, stock split, recapitalization, or other similar transaction. The proposed maximum offering price per share is estimated in accordance with Rule 457(c) and Rule 457(h) promulgated under the Securities Act solely for the purpose of calculating the registration fee and is based on a price of $122.73 per ADS, which is the average of the high and low prices per ADS on March 19, 2026, as reported on The Nasdaq Global Market. These shares may be represented by the ADSs of the Registrant. Each ADS represents the right to receive one Ordinary Share of the Registrant. ADSs issuable upon deposit of the Ordinary Shares registered hereby were registered pursuant to the Registrant's Registration Statement on Form F-6 (File No. 333-274845). Pursuant to Rule 416(a) promulgated under the Securities Act, this Registration Statement shall also cover any additional Ordinary Shares that become issuable under the Registrant's Free Share Plan AGA 2025-7 by reason of any stock dividend, stock split, recapitalization, or other similar transaction. The proposed maximum offering price per share is estimated in accordance with Rule 457(c) and Rule 457(h) promulgated under the Securities Act solely for the purpose of calculating the registration fee and is based on a price of $122.73 per ADS, which is the average of the high and low prices per ADS on March 19, 2026, as reported on The Nasdaq Global Market. These shares may be represented by the ADSs of the Registrant. Each ADS represents the right to receive one Ordinary Share of the Registrant. ADSs issuable upon deposit of the Ordinary Shares registered hereby were registered pursuant to the Registrant's Registration Statement on Form F-6 (File No. 333-274845). Pursuant to Rule 416(a) promulgated under the Securities Act, this Registration Statement shall also cover any additional Ordinary Shares that become issuable under the Registrant's Free Share Plan AGA 2025-8 by reason of any stock dividend, stock split, recapitalization, or other similar transaction. The proposed maximum offering price per share is estimated in accordance with Rule 457(c) and Rule 457(h) promulgated under the Securities Act solely for the purpose of calculating the registration fee and is based on a price of $122.73 per ADS, which is the average of the high and low prices per ADS on March 19, 2026, as reported on The Nasdaq Global Market. These shares may be represented by the ADSs of the Registrant. Each ADS represents the right to receive one Ordinary Share of the Registrant. ADSs issuable upon deposit of the Ordinary Shares registered hereby were registered pursuant to the Registrant's Registration Statement on Form F-6 (File No. 333-274845). Pursuant to Rule 416(a) promulgated under the Securities Act, this Registration Statement shall also cover any additional Ordinary Shares that become issuable under the Registrant's Free Share Plan AGA 2026-1 by reason of any stock dividend, stock split, recapitalization, or other similar transaction. The proposed maximum offering price per share is estimated in accordance with Rule 457(c) and Rule 457(h) promulgated under the Securities Act solely for the purpose of calculating the registration fee and is based on a price of $122.73 per ADS, which is the average of the high and low prices per ADS on March 19, 2026, as reported on The Nasdaq Global Market. These shares may be represented by the ADSs of the Registrant. Each ADS represents the right to receive one Ordinary Share of the Registrant. ADSs issuable upon deposit of the Ordinary Shares registered hereby were registered pursuant to the Registrant's Registration Statement on Form F-6 (File No. 333-274845). Pursuant to Rule 416(a) promulgated under the Securities Act, this Registration Statement shall also cover any additional Ordinary Shares that become issuable under the Registrant's Share Warrants Plan BSA-2026-1 by reason of any stock dividend, stock split, recapitalization, or other similar transaction. The proposed maximum offering price per share is estimated in accordance with Rule 457(h) promulgated under the Securities Act solely for the purpose of calculating the registration fee and is based upon an exercise price of euro 99.63 per Ordinary Share and an exchange rate of $1.1489 per euro 1.00, the foreign exchange reference rate on March 19, 2026, as reported by the European Central Bank.