0000950170-24-099838.txt : 20240822 0000950170-24-099838.hdr.sgml : 20240822 20240822160724 ACCESSION NUMBER: 0000950170-24-099838 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20240820 FILED AS OF DATE: 20240822 DATE AS OF CHANGE: 20240822 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: VON RICKENBACH JOSEF H CENTRAL INDEX KEY: 0001007706 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38130 FILM NUMBER: 241232059 MAIL ADDRESS: STREET 1: C/O PAREXEL INTERNATIONAL CORPORATION CITY: WALTHAM STATE: MA ZIP: 02451-1163 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Aileron Therapeutics, Inc. CENTRAL INDEX KEY: 0001420565 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 134196017 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 12407 N. MOPAC EXPY. STREET 2: SUITE 250 #390 CITY: AUSTIN STATE: TX ZIP: 78758 BUSINESS PHONE: 7378021989 MAIL ADDRESS: STREET 1: 12407 N. MOPAC EXPY. STREET 2: SUITE 250 #390 CITY: AUSTIN STATE: TX ZIP: 78758 FORMER COMPANY: FORMER CONFORMED NAME: AILERON THERAPEUTICS INC DATE OF NAME CHANGE: 20071207 4 1 ownership.xml 4 X0508 4 2024-08-20 0001420565 Aileron Therapeutics, Inc. ALRN 0001007706 VON RICKENBACH JOSEF H C/O AILERON THERAPEUTICS, INC 12407 N. MOPAC EXPY. SUITE 250 #390 AUSTIN TX 78758 true false false false false Stock Option (right to buy) 2.40 2024-08-20 4 A false 2725 0.00 A 2034-08-19 Common Stock 2725 2725 D This option was granted on August 20, 2024. The shares underlying the option are scheduled to vest in full on the earlier of (i) August 20, 2025 or (ii) the date of the Issuer's 2025 Annual Meeting of Stockholders. Exhibit 24.1 Power of Attorney /s/ Brian Windsor, attorney-in-fact for Josef H. von Rickenbach 2024-08-22 EX-24.1 2 alrn-ex24_1.htm EX-24.1 EX-24.1

Exhibit 24.1

LIMITED POWER OF ATTORNEY
FOR SECTION 16 REPORTING OBLIGATIONS

Know all by these presents, that the undersigned hereby makes, constitutes and appoints Brian Windsor as the undersigned’s true and lawful attorney‑in‑fact with full power and authority as hereinafter described to:

(1) execute for and on behalf of the undersigned, in the undersigned’s capacity as an officer of Aileron Therapeutics, Inc. (the “Company”), Forms 3, 4, and 5 (including any amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder (the “Exchange Act”);

(2) do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to prepare, complete and execute any such Form 3, 4, or 5, prepare, complete and execute any amendment or amendments thereto, and timely deliver and file such form with the United States Securities and Exchange Commission (the “SEC”) and any stock exchange or similar authority, including without limitation the filing of a Form ID, Update Passphrase, or any other application materials to enable the undersigned to gain or maintain access to the Electronic Data Gathering, Analysis and Retrieval system of the SEC;

(3) seek or obtain, as the undersigned’s representative and on the undersigned’s behalf, information regarding transactions in the Company’s securities from any third party, including brokers, employee benefit plan administrators and trustees, and the undersigned hereby authorizes any such person to release any such information to such attorney‑in‑fact and approves and ratifies any such release of information; and

(4) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney‑in‑fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney‑in‑fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney‑in‑fact may approve in such attorney‑in‑fact’s discretion.

The undersigned hereby grants to each such attorney‑in‑fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney‑in‑fact, or such attorney‑in‑fact’s substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys‑in‑fact, in serving in such capacity at the request of the undersigned, are not assuming nor relieving, nor is the Company assuming nor relieving, any of the undersigned’s responsibilities to comply with Section 16 of the Exchange Act. The undersigned acknowledges that neither the Company nor the foregoing attorneys‑in‑fact assume

(i) any liability for the undersigned’s responsibility to comply with the requirement of the Exchange Act, (ii) any liability of the undersigned for any failure to comply with such requirements, or (iii) any obligation or liability of the undersigned for profit disgorgement under Section 16(b) of the Exchange Act.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with respect to the undersigned’s holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys‑in‑fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of August 22, 2024.

/s/ Josef H. von Rickenbach

Name: Josef H. von Rickenbach