X0206 3 2026-01-26 0 0001517022 Akebia Therapeutics, Inc. AKBA 0002107264 Rucci Carolyn M. C/O AKEBIA THERAPEUTICS, INC 245 FIRST ST. CAMBRIDGE MA 02142 false true false false SVP, Chief Legal Officer Common Stock 171816.00 D Common Stock 36800.00 D Common Stock 99534.00 D Common Stock 160000.00 D Employee Stock Option (right to buy) 2.88 2031-09-30 Common Stock 61000.00 D Employee Stock Option (right to buy) 2.16 2032-02-28 Common Stock 27900.00 D Employee Stock Option (right to buy) 0.63 2033-01-31 Common Stock 165600.00 D Employee Stock Option (right to buy) 1.68 2034-01-31 Common Stock 224000.00 D Employee Stock Option (right to buy) 2.24 2035-01-31 Common Stock 240000.00 D The restricted stock units were granted by the Issuer pursuant to its 2014 Incentive Plan, as amended. All of the restricted stock units will vest on January 31, 2026, subject to the reporting person's continued service with the Issuer on such vesting date. The restricted stock units were granted by the Issuer pursuant to its 2023 Stock Incentive Plan, as amended. One third of the restricted stock units will vest on each of the first, second and third anniversaries of the grant date, subject to the reporting person's continued service with the Issuer on each vesting date. The options were granted by the Issuer as an inducement material to the reporting person's entering into employment with the Issuer in accordance with Nasdaq Listing Rule 5635(c)(4). The options will vest over four years: 25% of the options will vest on the first anniversary of the grant date with the remaining 75% vesting in equal quarterly installments thereafter, subject to the reporting person's continued service with the Issuer on each vesting date. The options were granted by the Issuer pursuant to its 2014 Incentive Plan, as amended. The options will vest over four years: 25% of the options will vest on the first anniversary of the grant date with the remaining 75% vesting in equal quarterly installments thereafter, subject to the reporting person's continued service with the Issuer on each vesting date. The options were granted by the Issuer pursuant to its 2023 Stock Incentive Plan, as amended. The options will vest over four years: 25% of the options will vest on the first anniversary of the grant date with the remaining 75% vesting in equal quarterly installments thereafter, subject to the reporting person's continued service with the Issuer on each vesting date. /s/ Carolyn M. Rucci 2026-02-03