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Akari Therapeutics grants director stock and options

The RSU awards were granted in lieu of accrued but unpaid cash retainers, with shareholder approval governing their vesting.

(Neutral)

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Form Type
4

Rhea-AI Filing Summary

Akari Therapeutics Plc (AKTX) director Raymond Prudo-Chlebosz was granted 9,072 American Depositary Shares (ADSs) representing restricted stock units on August 18, 2026, and 3,240 ADSs on October 5, 2026, in lieu of accrued but unpaid cash retainers payable to non-executive directors. Both RSU awards are subject to forfeiture if shareholder approval of a proposed amendment increasing shares reserved under the equity incentive plan is not obtained, and vest in full on approval. He was also granted options for 30,000 ADSs and 15,000 ADSs on August 18, 2026, each with a $7.899 exercise price; vesting depends on approval and continued service.

Insider Prudo-Chlebosz Raymond
Role Director
Type Security Shares Price Value
Grant/Award American Depositary Shares representing Ordinary Shares F2, F3 3,240 $7.899 $26K
Grant/Award Stock Option (Right to Buy) F4 30,000 $0.00 $0.00
Grant/Award Stock Option (Right to Buy) F5 15,000 $0.00 $0.00
Grant/Award American Depositary Shares representing Ordinary Shares F1, F3 9,072 $7.899 $72K
Holdings After Transaction: Stock Option (Right to Buy) — 45,000 contracts (Direct); American Depositary Shares representing Ordinary Shares — 76,861 shares (Direct)
Footnotes (5)
  1. F1. These American Depositary Shares ("ADSs") represent restricted stock units ("RSUs"), with each such RSU representing the right to receive 80,000 ordinary shares with a par value of $0.000000005 per ordinary share. This RSU grant was approved by the Board of Directors of the Issuer on August 18, 2026, and is subject to forfeiture if shareholder approval of a proposed amendment to the Issuer's equity incentive plan to increase the number of shares reserved for issuance under the plan ("Shareholder Approval") is not obtained. The RSUs will vest in full on the date of Shareholder Approval.
  2. F2. These ADSs represent RSUs, with each such RSU representing the right to receive 80,000 ordinary shares with a par value of $0.000000005 per ordinary share. This RSU grant was approved by the Board of Directors of the Issuer on October 5, 2026, and is subject to forfeiture if Shareholder Approval is not obtained. The RSUs will vest in full on the date of Shareholder Approval.
  3. F3. This award of RSUs was granted in lieu of accrued but unpaid cash retainers payable to non-execute directors in accordance with the Issuer's remuneration policy.
  4. F4. On August 18, 2026, the Reporting Person was granted an option to purchase 30,000 ADSs. This option grant is subject to forfeiture if Shareholder Approval is not obtained. The option will vest with respect to 4.17% for each one-month anniversary of August 18, 2026 that has elapsed before the date of Shareholder Approval. The remainder of the option grant will vest in equal, monthly installments beginning on the 18th day of the month subsequent to the month where Shareholder Approval was obtained until fully vested on the two-year anniversary of August 18, 2026, subject to the Reporting Person's continued service with the Issuer on each such vesting date.
  5. F5. On August 18, 2026, the Reporting Person was granted an option to purchase 15,000 ADSs. This option grant is subject to forfeiture if Shareholder Approval is not obtained. Beginning on the date of Shareholder Approval, this option will vest with respect to 8.33% of the grant on the date of Shareholder Approval plus 8.33% for each one-month anniversary of August 18, 2026 that has elapsed before the date of Shareholder Approval. The remainder of the option grant will vest in equal, monthly installments beginning on the 18th day of the month subsequent to the month where Shareholder Approval was obtained until fully vested on the one-year anniversary of August 18, 2026, subject to the Reporting Person's continued service with the Issuer on each such vesting date.
ADSs representing RSUs 9,072 ADSs Granted August 18, 2026
ADSs representing RSUs 3,240 ADSs Granted October 5, 2026
Option grant 30,000 ADSs Granted August 18, 2026
Option grant 15,000 ADSs Granted August 18, 2026
Exercise price $7.899 per ADS Applies to both option grants
Ordinary shares per RSU 80,000 ordinary shares Right to receive per RSU
restricted stock units financial
"represent restricted stock units ("RSUs")"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Shareholder Approval financial
"subject to forfeiture if Shareholder Approval is not obtained"
Shareholder approval is a formal vote by a company’s owners—its shareholders—to accept or reject major corporate actions such as mergers, sale of significant assets, board member elections, or changes to the company’s governing rules. It matters to investors because it gives them direct influence over decisions that affect the company’s value and risk profile; think of it like neighbors voting on a large renovation that will change property values, where approval lets the project proceed and rejection stops it.
equity incentive plan financial
"shares reserved for issuance under the plan"
An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.
vest in equal, monthly installments financial
"will vest in equal, monthly installments"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What awards did AKTX director Raymond Prudo-Chlebosz receive?

He received 9,072 ADSs representing RSUs on August 18, 2026, and 3,240 ADSs representing RSUs on October 5, 2026. He also received options for 30,000 ADSs and 15,000 ADSs on August 18, 2026, each with a $7.899 exercise price.

Are AKTX director Raymond Prudo-Chlebosz's RSUs conditional on shareholder approval?

Yes. The RSUs are subject to forfeiture if shareholder approval of a proposed amendment increasing shares reserved under the equity incentive plan is not obtained. They vest in full on the date of approval.

How do AKTX director Raymond Prudo-Chlebosz's options vest?

The 30,000-ADS option vests 4.17% for each monthly anniversary of August 18, 2026, elapsed before approval, with the remainder vesting monthly from the 18th of the month after approval through the two-year anniversary. The 15,000-ADS option vests 8.33% on approval plus 8.33% for each elapsed monthly anniversary, with the remainder vesting monthly through the one-year anniversary. Both schedules require continued service.

How many ordinary shares does each AKTX RSU represent?

Each RSU represents the right to receive 80,000 ordinary shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Prudo-Chlebosz Raymond

(Last)(First)(Middle)
C/O AKARI THERAPEUTICS PLC
401 EAST JACKSON STREET, SUITE 3300

(Street)
TAMPA FLORIDA 33602

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Akari Therapeutics Plc [ AKTX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/18/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
American Depositary Shares representing Ordinary Shares08/18/2026A9,072(1)(3)A$7.89973,621D
American Depositary Shares representing Ordinary Shares10/05/2026A3,240(2)(3)A$7.89976,861D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$7.89908/18/2026A30,000 (4)08/18/2036American Depositary Shares representing Ordinary Shares30,000$030,000D
Stock Option (Right to Buy)$7.89908/18/2026A15,000 (5)08/18/2036American Depositary Shares representing Ordinary Shares15,000$015,000D
Explanation of Responses:
1. These American Depositary Shares ("ADSs") represent restricted stock units ("RSUs"), with each such RSU representing the right to receive 80,000 ordinary shares with a par value of $0.000000005 per ordinary share. This RSU grant was approved by the Board of Directors of the Issuer on August 18, 2026, and is subject to forfeiture if shareholder approval of a proposed amendment to the Issuer's equity incentive plan to increase the number of shares reserved for issuance under the plan ("Shareholder Approval") is not obtained. The RSUs will vest in full on the date of Shareholder Approval.
2. These ADSs represent RSUs, with each such RSU representing the right to receive 80,000 ordinary shares with a par value of $0.000000005 per ordinary share. This RSU grant was approved by the Board of Directors of the Issuer on October 5, 2026, and is subject to forfeiture if Shareholder Approval is not obtained. The RSUs will vest in full on the date of Shareholder Approval.
3. This award of RSUs was granted in lieu of accrued but unpaid cash retainers payable to non-execute directors in accordance with the Issuer's remuneration policy.
4. On August 18, 2026, the Reporting Person was granted an option to purchase 30,000 ADSs. This option grant is subject to forfeiture if Shareholder Approval is not obtained. The option will vest with respect to 4.17% for each one-month anniversary of August 18, 2026 that has elapsed before the date of Shareholder Approval. The remainder of the option grant will vest in equal, monthly installments beginning on the 18th day of the month subsequent to the month where Shareholder Approval was obtained until fully vested on the two-year anniversary of August 18, 2026, subject to the Reporting Person's continued service with the Issuer on each such vesting date.
5. On August 18, 2026, the Reporting Person was granted an option to purchase 15,000 ADSs. This option grant is subject to forfeiture if Shareholder Approval is not obtained. Beginning on the date of Shareholder Approval, this option will vest with respect to 8.33% of the grant on the date of Shareholder Approval plus 8.33% for each one-month anniversary of August 18, 2026 that has elapsed before the date of Shareholder Approval. The remainder of the option grant will vest in equal, monthly installments beginning on the 18th day of the month subsequent to the month where Shareholder Approval was obtained until fully vested on the one-year anniversary of August 18, 2026, subject to the Reporting Person's continued service with the Issuer on each such vesting date.
/s/ Abizer Gaslightwala, as Attorney-in-Fact10/16/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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