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[8-K] SELLAS Life Sciences Group, Inc. Reports Material Event

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
8-K
Rhea-AI Filing Summary

SELLAS Life Sciences Group disclosed that it has issued a press release announcing its financial results for the quarter ended June 30, 2025 and providing a corporate update. The press release is furnished as Exhibit 99.1 to this Form 8-K and is incorporated by reference, but the company states the press release is furnished and not deemed "filed" for purposes of certain securities laws.

The Form identifies the registrant and trading symbol SLS on Nasdaq, provides principal office contact details, and is signed by John T. Burns, Senior Vice President and Chief Financial Officer. The 8-K itself does not present the underlying financial figures; readers must consult Exhibit 99.1 for complete results and the corporate update.

SELLAS Life Sciences Group ha comunicato di aver diffuso un comunicato stampa con i risultati finanziari per il trimestre terminato il 30 giugno 2025 e un aggiornamento societario. Il comunicato è fornito come Allegato 99.1 al presente Modulo 8-K ed è incorporato per riferimento, ma la società precisa che il comunicato è fornito e non è considerato 'depositato' ai fini di alcune leggi sui titoli.

Il Modulo indica il registrante e il simbolo di negoziazione SLS su Nasdaq, fornisce i contatti della sede principale ed è firmato da John T. Burns, Senior Vice President e Chief Financial Officer. L'8-K non riporta i dati finanziari sottostanti; i lettori devono consultare l'Allegato 99.1 per risultati completi e l'aggiornamento aziendale.

SELLAS Life Sciences Group divulgó que emitió un comunicado de prensa anunciando sus resultados financieros del trimestre cerrado el 30 de junio de 2025 y proporcionando una actualización corporativa. El comunicado se adjunta como Anexo 99.1 a este Formulario 8-K y se incorpora por referencia, pero la compañía aclara que el comunicado se proporciona y no se considera 'presentado' a efectos de determinadas leyes de valores.

El formulario identifica al registrante y el símbolo de cotización SLS en Nasdaq, facilita los datos de contacto de la oficina principal y está firmado por John T. Burns, Senior Vice President y Chief Financial Officer. El 8-K en sí no presenta las cifras financieras subyacentes; los lectores deben consultar el Anexo 99.1 para obtener los resultados completos y la actualización corporativa.

SELLAS Life Sciences Group� 2025� 6� 30�� 종료� 분기 실적� 회사 업데이트� 발표하는 보도자료� 발행했다� 밝혔습니�. 해당 보도자료� � Form 8-K� Exhibit 99.1� 제출되어 참조� 위해 통합되었으나, 회사� 보도자료가 제출되어 'filed'� 간주되지 않는다고 명시했습니다.

해당 Form은 등록자와 나스닥의 거래 심볼 SLS� 기재하고 본사 연락� 정보� 제공하며, John T. Burns 수석 부사장 � 최고재무책임자가 서명했습니다. 8-K 자체에는 기초 재무 수치가 포함되어 있지 않으므� 전체 실적� 회사 업데이트� Exhibit 99.1� 참조해야 합니�.

SELLAS Life Sciences Group a indiqué avoir publié un communiqué de presse annonçant ses résultats financiers pour le trimestre clos le 30 juin 2025 et fournissant une mise à jour d'entreprise. Le communiqué est fourni en tant que Exhibit 99.1 à ce formulaire 8-K et est incorporé par référence, mais la société précise qu'il est fourni et n’est pas considéré comme « déposé » au regard de certaines lois sur les valeurs mobilières.

Le formulaire identifie l'enregistrant et le symbole de cotation SLS sur le Nasdaq, fournit les coordonnées du siège et est signé par John T. Burns, Senior Vice President et Chief Financial Officer. Le 8‑K lui‑même ne présente pas les chiffres financiers sous‑jacents ; pour les résultats complets et la mise à jour d'entreprise, il convient de consulter l'Exhibit 99.1.

SELLAS Life Sciences Group gab bekannt, dass es eine Pressemitteilung veröffentlicht hat, in der die Finanzergebnisse für das zum 30. Juni 2025 endende Quartal sowie ein Unternehmensupdate bekanntgegeben werden. Die Pressemitteilung ist als Exhibit 99.1 zu diesem Form 8-K beigefügt und durch Verweis eingearbeitet, wobei das Unternehmen erklärt, die Mitteilung werde zwar übermittelt, jedoch im Sinne bestimmter Wertpapiergesetze nicht als 'filed' angesehen.

Das Formular nennt den Eintragspflichtigen und das Börsensymbol SLS an der Nasdaq, enthält Kontaktdaten der Hauptniederlassung und ist unterschrieben von John T. Burns, Senior Vice President und Chief Financial Officer. Das 8-K selbst enthält nicht die zugrundeliegenden Finanzzahlen; für vollständige Ergebnisse und das Unternehmensupdate ist Exhibit 99.1 heranzuziehen.

Positive
  • Press release furnished as Exhibit 99.1 provides investors with the announced quarterly results and a corporate update
  • Disclosure identifies the company and trading symbol (SLS), maintaining regulatory transparency
Negative
  • The Form 8-K does not include the actual financial figures or detailed metrics; readers must consult Exhibit 99.1
  • Information is explicitly "furnished" and not "filed", which limits certain statutory liabilities and may affect legal recourse based on the filing alone

Insights

TL;DR: Routine disclosure; press release furnished but no financials in the 8-K reduces immediate market impact.

The filing notifies investors that quarterly results and a corporate update were released via a press release attached as Exhibit 99.1. Because the Form merely furnishes the press release and explicitly states the content is "not filed," there is limited incremental legal exposure and no additional financial detail included in the 8-K itself. Investors and analysts must review Exhibit 99.1 to assess revenue, earnings, cash position, or any operational changes before drawing conclusions.

TL;DR: Disclosure process follows standard practice; "furnished" designation limits Section 18 liabilities.

The company followed a common compliance route by furnishing a press release as an exhibit rather than filing it, which satisfies public disclosure while limiting certain statutory liabilities. The Form includes the required exhibit list and an authorized officer signature. From a governance standpoint, the filing is procedural and does not, by itself, change board composition, executive roles, or corporate governance policies.

SELLAS Life Sciences Group ha comunicato di aver diffuso un comunicato stampa con i risultati finanziari per il trimestre terminato il 30 giugno 2025 e un aggiornamento societario. Il comunicato è fornito come Allegato 99.1 al presente Modulo 8-K ed è incorporato per riferimento, ma la società precisa che il comunicato è fornito e non è considerato 'depositato' ai fini di alcune leggi sui titoli.

Il Modulo indica il registrante e il simbolo di negoziazione SLS su Nasdaq, fornisce i contatti della sede principale ed è firmato da John T. Burns, Senior Vice President e Chief Financial Officer. L'8-K non riporta i dati finanziari sottostanti; i lettori devono consultare l'Allegato 99.1 per risultati completi e l'aggiornamento aziendale.

SELLAS Life Sciences Group divulgó que emitió un comunicado de prensa anunciando sus resultados financieros del trimestre cerrado el 30 de junio de 2025 y proporcionando una actualización corporativa. El comunicado se adjunta como Anexo 99.1 a este Formulario 8-K y se incorpora por referencia, pero la compañía aclara que el comunicado se proporciona y no se considera 'presentado' a efectos de determinadas leyes de valores.

El formulario identifica al registrante y el símbolo de cotización SLS en Nasdaq, facilita los datos de contacto de la oficina principal y está firmado por John T. Burns, Senior Vice President y Chief Financial Officer. El 8-K en sí no presenta las cifras financieras subyacentes; los lectores deben consultar el Anexo 99.1 para obtener los resultados completos y la actualización corporativa.

SELLAS Life Sciences Group� 2025� 6� 30�� 종료� 분기 실적� 회사 업데이트� 발표하는 보도자료� 발행했다� 밝혔습니�. 해당 보도자료� � Form 8-K� Exhibit 99.1� 제출되어 참조� 위해 통합되었으나, 회사� 보도자료가 제출되어 'filed'� 간주되지 않는다고 명시했습니다.

해당 Form은 등록자와 나스닥의 거래 심볼 SLS� 기재하고 본사 연락� 정보� 제공하며, John T. Burns 수석 부사장 � 최고재무책임자가 서명했습니다. 8-K 자체에는 기초 재무 수치가 포함되어 있지 않으므� 전체 실적� 회사 업데이트� Exhibit 99.1� 참조해야 합니�.

SELLAS Life Sciences Group a indiqué avoir publié un communiqué de presse annonçant ses résultats financiers pour le trimestre clos le 30 juin 2025 et fournissant une mise à jour d'entreprise. Le communiqué est fourni en tant que Exhibit 99.1 à ce formulaire 8-K et est incorporé par référence, mais la société précise qu'il est fourni et n’est pas considéré comme « déposé » au regard de certaines lois sur les valeurs mobilières.

Le formulaire identifie l'enregistrant et le symbole de cotation SLS sur le Nasdaq, fournit les coordonnées du siège et est signé par John T. Burns, Senior Vice President et Chief Financial Officer. Le 8‑K lui‑même ne présente pas les chiffres financiers sous‑jacents ; pour les résultats complets et la mise à jour d'entreprise, il convient de consulter l'Exhibit 99.1.

SELLAS Life Sciences Group gab bekannt, dass es eine Pressemitteilung veröffentlicht hat, in der die Finanzergebnisse für das zum 30. Juni 2025 endende Quartal sowie ein Unternehmensupdate bekanntgegeben werden. Die Pressemitteilung ist als Exhibit 99.1 zu diesem Form 8-K beigefügt und durch Verweis eingearbeitet, wobei das Unternehmen erklärt, die Mitteilung werde zwar übermittelt, jedoch im Sinne bestimmter Wertpapiergesetze nicht als 'filed' angesehen.

Das Formular nennt den Eintragspflichtigen und das Börsensymbol SLS an der Nasdaq, enthält Kontaktdaten der Hauptniederlassung und ist unterschrieben von John T. Burns, Senior Vice President und Chief Financial Officer. Das 8-K selbst enthält nicht die zugrundeliegenden Finanzzahlen; für vollständige Ergebnisse und das Unternehmensupdate ist Exhibit 99.1 heranzuziehen.

0001390478FALSE00013904782025-08-122025-08-12

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): August 12, 2025
 SELLAS Life Sciences Group, Inc.
(Exact name of registrant as specified in its charter)
Delaware001-3395820-8099512
(State or other jurisdiction of incorporation or organization)
(Commission
File Number)
(I.R.S. Employer
Identification No.)
7 Times Square, Suite 2503
New York, NY 10036
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code: (646) 200-5278

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations 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 classTrading symbol(s)Name of each exchange on which registered
Common Stock, $0.0001 par value per shareSLSThe Nasdaq Stock Market LLC
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
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 2.02. Results of Operations and Financial Condition.

On August 12, 2025, SELLAS Life Sciences Group, Inc. (“SELLAS”) issued a press release (the “Press Release”) announcing its financial results for the quarter ended June 30, 2025 and providing a corporate update.

A copy of the Press Release is furnished hereto as Exhibit 99.1 and is incorporated by reference herein. The information contained in this Item 2.02 and in the Press Release furnished as Exhibit 99.1 to this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained in this Item 2.02 and in the Press Release furnished as Exhibit 99.1 to this Current Report on Form 8-K shall not be incorporated by reference into any filing with the SEC made by SELLAS whether made before or after the date hereof, regardless of any general incorporation language in such filing.







Item 9.01.    Financial Statements and Exhibits.

(d)    Exhibits
Exhibit NumberDescription
99.1
Press Release dated August 12, 2025
104Cover Page Interactive Data File (embedded within the Inline XBRL document)



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.
 
  SELLAS Life Sciences Group, Inc.
Date: August 12, 2025  By: /s/ John T. Burns
   Name:John T. Burns
Title:Senior Vice President, Chief Financial Officer


FAQ

What did SELLAS (SLS) disclose in this 8-K?

The company furnished a press release announcing its financial results for the quarter ended June 30, 2025 and provided a corporate update; the press release is attached as Exhibit 99.1.

Are the financial results included directly in the Form 8-K?

No. The Form 8-K states the press release is furnished but does not embed the underlying financial figures; review Exhibit 99.1 for the full results.

Is the press release in Exhibit 99.1 considered "filed" with the SEC?

No. The 8-K explicitly states the information furnished as Exhibit 99.1 shall not be deemed "filed" for purposes of Section 18 of the Exchange Act and certain sections of the Securities Act.

Who signed the Form 8-K for SELLAS?

The Form is signed by John T. Burns, Senior Vice President and Chief Financial Officer.

Where is the company listed and what is the ticker?

SELLAS Life Sciences Group is listed on The Nasdaq Stock Market under the ticker SLS.
Sellas Life Sciences Group Inc

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Biotechnology
Pharmaceutical Preparations
United States
NEW YORK