0001541157 2025-01-01 2025-12-31 0001541157 2023-11-30 2025-01-01 2025-12-31 0001541157 AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 2024-01-01 2024-12-31 0001541157 AKTX:ExclusionofStockAwardsandOptionAwardsMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:InclusionofEquityValuesMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:ExclusionofStockAwardsandOptionAwardsMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:InclusionofEquityValuesMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:ExclusionofStockAwardsandOptionAwardsMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:InclusionofEquityValuesMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:AverageExclusionofStockAwardsandOptionAwardsMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageInclusionofEquityValuesMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageExclusionofStockAwardsandOptionAwardsMember 2024-01-01 2024-12-31 0001541157 AKTX:AverageInclusionofEquityValuesMember 2024-01-01 2024-12-31 0001541157 AKTX:YearEndFairValueofEquityAwardsGrantedDuringYearThatRemainedUnvestedasofLastDayofYearMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:ChangeinFairValuefromLastDayofPriorYeartoLastDayofYearofUnvestedEquityAwardsMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:VestingDateFairValueofEquityAwardsGrantedDuringYearthatVestedDuringYearMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:ChangeinFairValuefromLastDayofPriorYeartoVestingDateofEquityAwardsthatVestedDuringYearMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:FairValueatLastDayofPriorYearofEquityAwardsForfeitedDuringYearMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:TotalInclusionofEquityValuesMember AKTX:Peo1Member 2025-01-01 2025-12-31 0001541157 AKTX:YearEndFairValueofEquityAwardsGrantedDuringYearThatRemainedUnvestedasofLastDayofYearMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:ChangeinFairValuefromLastDayofPriorYeartoLastDayofYearofUnvestedEquityAwardsMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:VestingDateFairValueofEquityAwardsGrantedDuringYearthatVestedDuringYearMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:ChangeinFairValuefromLastDayofPriorYeartoVestingDateofEquityAwardsthatVestedDuringYearMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:FairValueatLastDayofPriorYearofEquityAwardsForfeitedDuringYearMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:TotalInclusionofEquityValuesMember AKTX:Peo2Member 2025-01-01 2025-12-31 0001541157 AKTX:YearEndFairValueofEquityAwardsGrantedDuringYearThatRemainedUnvestedasofLastDayofYearMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:ChangeinFairValuefromLastDayofPriorYeartoLastDayofYearofUnvestedEquityAwardsMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:VestingDateFairValueofEquityAwardsGrantedDuringYearthatVestedDuringYearMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:ChangeinFairValuefromLastDayofPriorYeartoVestingDateofEquityAwardsthatVestedDuringYearMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:FairValueatLastDayofPriorYearofEquityAwardsForfeitedDuringYearMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:TotalInclusionofEquityValuesMember AKTX:Peo2Member 2024-01-01 2024-12-31 0001541157 AKTX:AverageYearEndFairValueofEquityAwardsGrantedDuringYearThatRemainedUnvestedasofLastDayofYearMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageChangeinFairValuefromLastDayofPriorYeartoLastDayofYearofUnvestedEquityAwardsMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageVestingDateFairValueofEquityAwardsGrantedDuringYearthatVestedDuringYearMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageChangeinFairValuefromLastDayofPriorYeartoVestingDateofEquityAwardsthatVestedDuringYearMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageFairValueatLastDayofPriorYearofEquityAwardsForfeitedDuringYearMember 2025-01-01 2025-12-31 0001541157 AKTX:TotalAverageInclusionofEquityValuesMember 2025-01-01 2025-12-31 0001541157 AKTX:AverageYearEndFairValueofEquityAwardsGrantedDuringYearThatRemainedUnvestedasofLastDayofYearMember 2024-01-01 2024-12-31 0001541157 AKTX:AverageChangeinFairValuefromLastDayofPriorYeartoLastDayofYearofUnvestedEquityAwardsMember 2024-01-01 2024-12-31 0001541157 AKTX:AverageVestingDateFairValueofEquityAwardsGrantedDuringYearthatVestedDuringYearMember 2024-01-01 2024-12-31 0001541157 AKTX:AverageChangeinFairValuefromLastDayofPriorYeartoVestingDateofEquityAwardsthatVestedDuringYearMember 2024-01-01 2024-12-31 0001541157 AKTX:AverageFairValueatLastDayofPriorYearofEquityAwardsForfeitedDuringYearMember 2024-01-01 2024-12-31 0001541157 AKTX:TotalAverageInclusionofEquityValuesMember 2024-01-01 2024-12-31 0001541157 2025-04-21 2025-12-31 0001541157 2024-05-01 2025-04-20 iso4217:USD false 0001541157 PRE 14A AKARI THERAPEUTICS, PLC In November 2023, our compensation committee adopted a formal clawback policy, which applies in the event we are required to prepare an accounting restatement due to any material noncompliance with any financial reporting requirement under the U.S. federal securities laws. This policy requires us to (subject to certain limited exceptions set forth in the clawback policy and permitted under the final clawback rules) recover from any of our current or former executive officers who receive incentive-based compensation (including stock options and RSUs) after the effective date of the clawback policy and during the three-year period preceding the date on which we are required to prepare an accounting restatement, the excess of what would have been paid to such executive officer under the accounting restatement. Our compensation committee has generally granted equity awards on an annual basis. During 2025, our compensation committee did not take into account any material non-public information when determining the timing and terms of equity incentive awards, and we did not time the disclosure of material non-public information for the purpose of affecting the value of executive compensation. we did not time the disclosure of material non-public information for the purpose of affecting the value of executive compensation. false <table cellpadding="0" cellspacing="0" id="xdx_880_eecd--PvpTableTextBlock_zWwbMR9i5Zhk" style="font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; width: 100%" summary="xdx: Disclosure - Pay vs Performance Disclosure"> <tr style="vertical-align: bottom"> <td style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Year</td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Summary Compensation Table Total for PEO 1¹ ($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" id="xdx_489_eecd--PeoTotalCompAmt_hecd--IndividualAxis__custom--Peo2Member_z1CUulJgeeYg" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Summary Compensation Table Total for PEO 2¹ ($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Compensation Actually Paid to PEO 11,2,3 ($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" id="xdx_48B_eecd--PeoActuallyPaidCompAmt_hecd--IndividualAxis__custom--Peo2Member_zPtQZgSZq3S4" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Compensation Actually Paid to PEO 21,2,3 ($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" id="xdx_485_eecd--NonPeoNeoAvgTotalCompAmt_zDHAIhAWFFK3" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Average Summary Compensation Table Total for Non-PEO NEOs1 ($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" id="xdx_480_eecd--NonPeoNeoAvgCompActuallyPaidAmt_zV6bmMdIFtYg" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Average Compensation Actually Paid to Non-PEO NEOs1,2,3 ($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" id="xdx_483_eecd--TotalShareholderRtnAmt_pp2d_zFZrR8dvPiXl" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Value of Initial Fixed $100 Investment based on:4 TSR($)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td><td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" id="xdx_483_eus-gaap--NetIncomeLoss_pn5n6_zS119oRzqI9i" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Net Income($ Millions)</td><td style="padding-bottom: 1pt; font-weight: bold"> </td></tr> <tr id="xdx_41D_20250101__20251231_zAGPSCvWIP4h" style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="width: 10%; text-align: center; padding-left: 0pt">2025</td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 8%; text-align: right">1,663,603</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 8%; text-align: right">324,985</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 7%; text-align: right">485,929</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 7%; text-align: right">324,985</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 7%; text-align: right">369,695</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 7%; text-align: right">277,512</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 7%; text-align: right">2.94</td><td style="width: 1%; text-align: left"> </td><td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td><td style="width: 7%; text-align: right">(17.3</td><td style="width: 1%; text-align: left">)</td></tr> <tr id="xdx_418_20240101__20241231_zcJyO3HJuP86" style="vertical-align: bottom; background-color: White"> <td style="text-align: center; padding-left: 0pt">2024</td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">N/A</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">435,767</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">N/A</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">435,767</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">436,672</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">417,922</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">4.00</td><td style="text-align: left"> </td><td> </td> <td style="text-align: left"> </td><td style="text-align: right">(19.8</td><td style="text-align: left">)</td></tr> </table> 1663603 324985 485929 324985 369695 277512 2.94

-17300000

435767 435767 436672 417922 4.00

-19800000

Abizer Gaslightwala Samir R. Patel 1663603 -1332542 154868 485929 324985 -324985 324985 324985 435767 -435767 435767 435767 369695 -103008 10824 277512 436672 -70125 51375 417922 154868 154868 324985 324985 435767 435767 8470 2354 10824 48335 3040 51375 Description of Relationship Between PEOs and Non-PEO NEO Compensation Actually Paid and Company Total Shareholder Return (“TSR”) The following chart sets forth the relationship between Compensation Actually Paid to our PEOs, the average of Compensation Actually Paid to our Non-PEO NEOs, and the Company’s cumulative TSR over the two most recently completed fiscal years. <img alt="" src="formpre14a_002.jpg"/> Description of Relationship Between PEOs and Non-PEO NEO Compensation Actually Paid and Net Income The following chart sets forth the relationship between Compensation Actually Paid to our PEOs, the average of Compensation Actually Paid to our Non-PEO NEOs, and our net income during the two most recently completed fiscal years. <img alt="" src="formpre14a_003.jpg"/>