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[8-K] MAIA Biotechnology, Inc. Reports Material Event

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MAIA Biotechnology reported under Regulation FD that it presented a scientific poster titled “Presentation 1: A Phase 2 Study of Ateganosine (THIO; 6‑thio‑2’-deoxyguanosine) in combination with immune checkpoint inhibitor in patients with advanced NSCLC: THIO‑101 Trial.”

The poster was presented at the AACR‑NCI‑EORTC International Conference on Molecular Targets and Cancer Therapeutics in Boston, Massachusetts on October 24, 2025 and was posted to the company’s website the same day. The poster is furnished as Exhibit 99.1. The company notes the poster contains forward‑looking statements.

MAIA Biotechnology ha comunicato secondo la Regola FD che ha presentato un poster scientifico intitolato “Presentation 1: uno Studio di Fase II di Ateganosina (THIO; 6‑tioguanosina 2'-deossi) in combinazione con un inibitore del checkpoint immunitario in pazienti con NSCLC avanzato: THIO‑101 Trial.”

Il poster è stato presentato alla AACR‑NCI‑EORTC International Conference on Molecular Targets and Cancer Therapeutics a Boston, Massachusetts, il 24 ottobre 2025 ed è stato pubblicato sul sito web dell'azienda nello stesso giorno. Il poster è fornito come Exhibit 99.1. L'azienda segnala che il poster contiene dichiarazioni previsionali.

MAIA Biotechnology informó según Regla FD que presentó un cartel científico titulado “Presentación 1: Estudio de Fase 2 de Ateganosina (THIO; 6‑tioguanosina) en combinación con un inhibidor de checkpoint inmunitario en pacientes con NSCLC avanzado: Ensayo THIO‑101.”

El cartel se presentó en la Conferencia Internacional AACR‑NCI‑EORTC sobre objetivos moleculares y terapias contra el cáncer en Boston, Massachusetts, el 24 de octubre de 2025 y fue publicado en el sitio web de la empresa ese mismo día. El cartel se facilita como Exhibit 99.1. La empresa señala que el cartel contiene declaraciones prospectivas.

MAIA Biotechnology는 Regulation FD에 따라 ‘Presentation 1: A Phase 2 Study of Ateganosine (THIO; 6‑thio‑2’-deoxyguanosine) in combination with immune checkpoint inhibitor in patients with advanced NSCLC: THIO‑101 Trial.’라는 제목의 학술 포스터를 발표했다고 발표했다.

포스터는 2025년 10월 24일 매사추세츠 주 보스턴에서 열린 AACR‑NCI‑EORTC 국제 분자 표적 및 암 치료제 학회에서 발표되었으며 같은 날 회사 웹사이트에 게시되었다. 포스터는 Exhibit 99.1로 제공된다. 회사는 포스터에 앞으로의 전망 진술이 포함되어 있음을 주의한다.

MAIA Biotechnology a déclaré conformément à la Réglementation FD qu’elle avait présenté un poster scientifique intitulé “Presentation 1: Une étude de phase 2 d’Ateganosine (THIO; 6‑thioguanosine désoxyguanosine) en combinaison avec un inhibiteur de point de contrôle immunitaire chez des patients atteints de NSCLC avancé : essai THIO‑101.”

Le poster a été présenté lors de la conférence internationale AACR‑NCI‑EORTC sur les cibles moléculaires et les thérapies anticancéreuses à Boston, Massachusetts, le 24 octobre 2025 et a été publié sur le site Web de l’entreprise le jour même. Le poster est fourni en tant que Exhibit 99.1. L’entreprise précise que le poster contient des déclarations prospectives.

MAIA Biotechnology meldete gemäß Regulation FD, dass sie ein wissenschaftliches Poster mit dem Titel „Presentation 1: Eine Phase-2-Studie von Ateganosine (THIO; 6‑Thio‑2’-deoxyguanosine) in Kombination mit einem Immun-Checkpoint-Inhibitor bei Patienten mit fortgeschrittenem NSCLC: THIO‑101‑Versuch“ vorgestellt hat.

Das Poster wurde auf der AACR‑NCI‑EORTC International Conference on Molecular Targets and Cancer Therapeutics in Boston, Massachusetts am 24. Oktober 2025 präsentiert und noch am selben Tag auf der Website des Unternehmens veröffentlicht. Das Poster liegt als Exhibit 99.1 vor. Das Unternehmen weist darauf hin, dass das Poster zukunftsgerichtete Aussagen enthält.

MAIA Biotechnology أعلنت وفقاً للوائح Regulation FD أنها قدمت ملصقاً علمياً بعنوان “Presentation 1: دراسة من المرحلة الثانية عن Ateganosine (THIO؛ 6‑ثيو‑2’-دي‑أكسي غوانوزين) بالتعاون مع مثبط نقطة تحكُم مناعي لدى مرضى NSCLC المتقدم: تجربة THIO‑101.”

تم تقديم الملصق في المؤتمر الدولي AACR‑NCI‑EORTC حول الأهداف الجزيئية وعلاجات السرطان في بوسطن، ماساتشوستس، في 24 أكتوبر 2025 وتم نشره على موقع الشركة في اليوم نفسه. الملصق مقدم كـ Exhibit 99.1. وتشير الشركة إلى أن الملصق يحتوي على بيانات تطلعية.

Positive
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Negative
  • None.

MAIA Biotechnology ha comunicato secondo la Regola FD che ha presentato un poster scientifico intitolato “Presentation 1: uno Studio di Fase II di Ateganosina (THIO; 6‑tioguanosina 2'-deossi) in combinazione con un inibitore del checkpoint immunitario in pazienti con NSCLC avanzato: THIO‑101 Trial.”

Il poster è stato presentato alla AACR‑NCI‑EORTC International Conference on Molecular Targets and Cancer Therapeutics a Boston, Massachusetts, il 24 ottobre 2025 ed è stato pubblicato sul sito web dell'azienda nello stesso giorno. Il poster è fornito come Exhibit 99.1. L'azienda segnala che il poster contiene dichiarazioni previsionali.

MAIA Biotechnology informó según Regla FD que presentó un cartel científico titulado “Presentación 1: Estudio de Fase 2 de Ateganosina (THIO; 6‑tioguanosina) en combinación con un inhibidor de checkpoint inmunitario en pacientes con NSCLC avanzado: Ensayo THIO‑101.”

El cartel se presentó en la Conferencia Internacional AACR‑NCI‑EORTC sobre objetivos moleculares y terapias contra el cáncer en Boston, Massachusetts, el 24 de octubre de 2025 y fue publicado en el sitio web de la empresa ese mismo día. El cartel se facilita como Exhibit 99.1. La empresa señala que el cartel contiene declaraciones prospectivas.

MAIA Biotechnology는 Regulation FD에 따라 ‘Presentation 1: A Phase 2 Study of Ateganosine (THIO; 6‑thio‑2’-deoxyguanosine) in combination with immune checkpoint inhibitor in patients with advanced NSCLC: THIO‑101 Trial.’라는 제목의 학술 포스터를 발표했다고 발표했다.

포스터는 2025년 10월 24일 매사추세츠 주 보스턴에서 열린 AACR‑NCI‑EORTC 국제 분자 표적 및 암 치료제 학회에서 발표되었으며 같은 날 회사 웹사이트에 게시되었다. 포스터는 Exhibit 99.1로 제공된다. 회사는 포스터에 앞으로의 전망 진술이 포함되어 있음을 주의한다.

MAIA Biotechnology a déclaré conformément à la Réglementation FD qu’elle avait présenté un poster scientifique intitulé “Presentation 1: Une étude de phase 2 d’Ateganosine (THIO; 6‑thioguanosine désoxyguanosine) en combinaison avec un inhibiteur de point de contrôle immunitaire chez des patients atteints de NSCLC avancé : essai THIO‑101.”

Le poster a été présenté lors de la conférence internationale AACR‑NCI‑EORTC sur les cibles moléculaires et les thérapies anticancéreuses à Boston, Massachusetts, le 24 octobre 2025 et a été publié sur le site Web de l’entreprise le jour même. Le poster est fourni en tant que Exhibit 99.1. L’entreprise précise que le poster contient des déclarations prospectives.

MAIA Biotechnology meldete gemäß Regulation FD, dass sie ein wissenschaftliches Poster mit dem Titel „Presentation 1: Eine Phase-2-Studie von Ateganosine (THIO; 6‑Thio‑2’-deoxyguanosine) in Kombination mit einem Immun-Checkpoint-Inhibitor bei Patienten mit fortgeschrittenem NSCLC: THIO‑101‑Versuch“ vorgestellt hat.

Das Poster wurde auf der AACR‑NCI‑EORTC International Conference on Molecular Targets and Cancer Therapeutics in Boston, Massachusetts am 24. Oktober 2025 präsentiert und noch am selben Tag auf der Website des Unternehmens veröffentlicht. Das Poster liegt als Exhibit 99.1 vor. Das Unternehmen weist darauf hin, dass das Poster zukunftsgerichtete Aussagen enthält.

MAIA Biotechnology أعلنت وفقاً للوائح Regulation FD أنها قدمت ملصقاً علمياً بعنوان “Presentation 1: دراسة من المرحلة الثانية عن Ateganosine (THIO؛ 6‑ثيو‑2’-دي‑أكسي غوانوزين) بالتعاون مع مثبط نقطة تحكُم مناعي لدى مرضى NSCLC المتقدم: تجربة THIO‑101.”

تم تقديم الملصق في المؤتمر الدولي AACR‑NCI‑EORTC حول الأهداف الجزيئية وعلاجات السرطان في بوسطن، ماساتشوستس، في 24 أكتوبر 2025 وتم نشره على موقع الشركة في اليوم نفسه. الملصق مقدم كـ Exhibit 99.1. وتشير الشركة إلى أن الملصق يحتوي على بيانات تطلعية.

MAIA Biotechnology 根据FD规则报告称,其提交了题为“Presentation 1: A Phase 2 Study of Ateganosine (THIO; 6‑thio‑2’-deoxyguanosine) in combination with immune checkpoint inhibitor in patients with advanced NSCLC: THIO‑101 Trial.”的科学海报。

该海报于2025年10月24日在马萨诸塞州波士顿举行的AACR‑NCI‑EORTC国际靶点与癌症治疗会议上展示,并在同日发布在公司网站上。海报作为 Exhibit 99.1 提供。公司指出海报包含前瞻性陈述。

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

FORM 8-K

 

Current Report

 

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

 

Date of Report (Date of earliest event reported): October 24. 2025

 

MAIA Biotechnology, Inc.

(Exact name of registrant as specified in its charter)

 

Delaware   001-41455   83-1495913

(State or other jurisdiction

of incorporation)

 

(Commission

File Number)

 

(IRS Employer

Identification No.)

 

444 West Lake Street, Suite 1700

Chicago, IL

  60606
(Address of principal executive offices)   (Zip Code)

 

(312) 416-8592

(Registrant’s telephone number, including area code)

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

 

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
   
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
   
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
   
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

Securities registered pursuant to Section 12(b) of the Act:

 

Title of each class   Trading Symbol(s)   Name of each exchange on which registered
Common Stock   MAIA   NYSE American

 

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

 

Emerging growth company 

 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

 

 

 

 

 

 

Item 8.01 Regulation FD Disclosure.

 

MAIA Biotechnology, Inc. (the “Company”) has prepared a poster (the “Poster”) entitled “Presentation 1: A Phase 2 Study of Ateganosine (THIO; 6-thio-2’-deoxyguanosine) in Combination with Immune Checkpoint Inhibitor (ICI) in Patients with Advanced Non-Small Cell Lung Cancer (NSCLC) Resistant to Prior ICI and Chemotherapy: THIO-101 Trial.” The Poster was presented at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics in Boston, Massachusetts on October 24, 2025 and posted to the Company’s website on such date. A copy the Poster is filed as Exhibit 99.1 to this Current Report on Form 8-K and is hereby incorporated by reference.

 

The Poster contains forward-looking statements, and as a result, investors should not place undue reliance on these forward-looking statements.

 

Item 9.01 Financial Statements and Exhibits.

 

(d) Exhibits.

 

Exhibit No.   Description
99.1   Poster
104   Cover Page Interactive Data File (embedded within the Inline XBRL document)

 

2

 

 

SIGNATURES

 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

Dated: October 24, 2025

 

  MAIA BIOTECHNOLOGY, INC.
     
  By: /s/ Vlad Vitoc
  Name:  Vlad Vitoc
  Title: Chief Executive Officer

 

3

 

MAIA Biotechnology Inc.

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