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[8-K] Salarius Pharmaceuticals, Inc. Reports Material Event

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
8-K

On August 17, 2025, Salarius Pharmaceuticals, Inc. reported that its Board appointed Mark J. Rosenblum as acting Chief Executive Officer and designated him the company’s principal executive officer. The appointment follows the resignation of CEO David J. Arthur, who resigned without any reported disagreement with the company and will remain a director to support completion of the previously announced merger with Decoy Therapeutics Inc. Mr. Rosenblum, 72, will continue as Executive Vice President and Chief Financial Officer under his existing employment agreement; no new consulting or employment agreement was entered in connection with the appointment. The company also terminated Mr. Arthur’s consulting agreement effective immediately.

Il 17 agosto 2025, Salarius Pharmaceuticals, Inc. ha comunicato che il suo Consiglio ha nominato Mark J. Rosenblum come Chief Executive Officer ad interim e lo ha designato come principale dirigente dell’azienda. La nomina segue le dimissioni del CEO David J. Arthur, che si è dimesso senza alcuna discordanza riportata con l'azienda e rimarrà nel consiglio per supportare il completamento della fusione precedentemente annunciata con Decoy Therapeutics Inc. Il Sig. Rosenblum, 72 anni, continuerà a ricoprire l’incarico di Executive Vice President e Chief Financial Officer secondo il suo attuale contratto di lavoro; non è stato stipulato alcun nuovo accordo di consulenza o di impiego in relazione alla nomina. L’azienda ha anche risolto con effetto immediato l’accordo di consulenza del Sig. Arthur.

El 17 de agosto de 2025, Salarius Pharmaceuticals, Inc. informó que su Junta designó a Mark J. Rosenblum como director ejecutivo interino y lo designó como el principal oficial ejecutivo de la empresa. El nombramiento sigue a la renuncia del CEO David J. Arthur, quien renunció sin ninguna discrepancia reportada con la empresa y permanecerá como director para apoyar la finalización de la fusión previamente anunciada con Decoy Therapeutics Inc. El señor Rosenblum, de 72 años, continuará como Vicepresidente Ejecutivo y Director Financiero bajo su actual acuerdo de empleo; no se firmó ningún nuevo acuerdo de consultoría o empleo en relación con el nombramiento. La empresa también dio por terminado el acuerdo de consultoría del señor Arthur con efecto inmediato.

2025년 8월 17일, Salarius Pharmaceuticals, Inc.는 이사회가 Mark J. Rosenblum를 Acting Chief Executive Officer로 임명하고 그를 회사의 주요 경영책임자(CEO)로 지정했다고 발표했습니다. 이 임명은 David J. Arthur CEO의 사임에 따른 것이며, 회사와의 불일치가 보고되지 않았고 이전에 발표된 Decoy Therapeutics Inc.와의 합병 완성을 지원하기 위해 이사회에서 계속 남아 있을 것입니다. Rosenblum 씨(72세)는 기존 고용계약에 따라 계속해서 부사장 겸 최고재무책임자(CFO)로 남게 되며, 임명과 관련한 새로운 컨설팅 또는 고용 계약은 체결되지 않았습니다. 또한 회사는 Arthur 씨의 컨설팅 계약을 즉시 해지했습니다.

Le 17 août 2025, Salarius Pharmaceuticals, Inc. a annoncé que son conseil d’administration a nommé Mark J. Rosenblum en tant que président-directeur général par intérim et l’a désigné comme le principal dirigeant opérationnel de l’entreprise. Cette nomination fait suite à la démission du PDG David J. Arthur, qui a démissionné sans aucun désaccord signalé avec l’entreprise et restera administrateur pour soutenir l’achèvement de la fusion précédemment annoncée avec Decoy Therapeutics Inc. M. Rosenblum, 72 ans, continuera à occuper les fonctions de Vice-président exécutif et directeur financier en vertu de son contrat de travail existant; aucun nouveau contrat de conseil ou d’emploi n’a été conclu en relation avec la nomination. L’entreprise a également résilié le contrat de conseil de M. Arthur avec effet immédiat.

Am 17. August 2025 gab der Vorstand von Salarius Pharmaceuticals, Inc. bekannt, dass er Mark J. Rosenblum vorübergehend zum Chief Executive Officer ernannt und ihn zum wichtigsten geschäftsführenden leitenden Angestellten des Unternehmens ernannt hat. Die Ernennung erfolgt auf die Rücktritt von CEO David J. Arthur, der ohne berichtete Meinungsverschiedenheiten mit dem Unternehmen zurücktrat und als Direktor bestehen bleibt, um den Abschluss der zuvor angekündigten Fusion mit Decoy Therapeutics Inc. zu unterstützen. Herr Rosenblum, 72 Jahre alt, wird weiterhin als Executive Vice President und Chief Financial Officer gemäß seinem bestehenden Arbeitsvertrag tätig sein; es wurde kein neuer Beratungs- oder Arbeitsvertrag im Zusammenhang mit der Ernennung abgeschlossen. Das Unternehmen hat außerdem den Beratungsvertrag von Herrn Arthur mit sofortiger Wirkung beendet.

في 17 أغسطس 2025، أفادت Salarius Pharmaceuticals, Inc. أن مجلس إدارتها عيّن Mark J. Rosenblum مديراً تنفيذياً بالإنابة وعينه كـ"المدير التنفيذي الرئيسي" للشركة. يأتي القرار عقب استقالة الرئيس التنفيذي David J. Arthur، الذي استقال دون وجود خلاف معلَن مع الشركة وسيظل عضواً في المجلس لدعم إتمام الاندماج الذي أعلن عنه سابقاً مع Decoy Therapeutics Inc. سيواصل السيد Rosenblum، البالغ من العمر 72 عاماً، منصبه كنائب الرئيس التنفيذي وكبير الموظفين الماليين بموجب اتفاق التوظيف القائم؛ لم يتم إبرام أي اتفاق استشاري أو توظيف جديد فيما يتعلق بالتعيين. كما أنتهت الشركة اتفاقية استشارته للسيد آرثر فوراً.

在 2025 年 8 月 17 日,Salarius Pharmaceuticals, Inc. 报告其董事会任命 Mark J. Rosenblum 为代理首席执行官,并指定他为公司的首席执行官。此任命是在首席执行官 David J. Arthur 辞职之后作出的,Arthur 辞职时公司未报告存在任何分歧,他将继续担任董事以支持此前宣布的与 Decoy Therapeutics Inc. 的合并的完成。Rosenblum 先生,72 岁,将在现有雇佣协议下继续担任执行副总裁兼首席财务官;与任命相关的未签署新的咨询或雇佣协议。公司还立即终止了 Arthur 先生的咨询协议。

Positive
  • Continuity of leadership: Acting CEO Mark J. Rosenblum continues as CFO, preserving institutional knowledge
  • Support for merger: Former CEO David J. Arthur remains on the Board to assist with the pending merger with Decoy Therapeutics Inc.
Negative
  • Unexpected CEO resignation: Departure of David J. Arthur represents a material leadership change
  • Consolidated responsibilities: Acting CEO also serving as CFO concentrates senior roles in one executive

Insights

Board appointed the CFO as acting CEO after a non‑disagreement resignation.

The Board named Mark J. Rosenblum acting CEO while he retains his role as CFO, preserving executive continuity during a transition. Retaining the former CEO, David J. Arthur, as a director to assist with the pending merger with Decoy Therapeutics Inc. reduces disruption to that transaction.

There was no new employment agreement with Mr. Rosenblum and the company terminated Mr. Arthur’s consulting agreement effective immediately, indicating the leadership change was implemented under existing contracts.

Il 17 agosto 2025, Salarius Pharmaceuticals, Inc. ha comunicato che il suo Consiglio ha nominato Mark J. Rosenblum come Chief Executive Officer ad interim e lo ha designato come principale dirigente dell’azienda. La nomina segue le dimissioni del CEO David J. Arthur, che si è dimesso senza alcuna discordanza riportata con l'azienda e rimarrà nel consiglio per supportare il completamento della fusione precedentemente annunciata con Decoy Therapeutics Inc. Il Sig. Rosenblum, 72 anni, continuerà a ricoprire l’incarico di Executive Vice President e Chief Financial Officer secondo il suo attuale contratto di lavoro; non è stato stipulato alcun nuovo accordo di consulenza o di impiego in relazione alla nomina. L’azienda ha anche risolto con effetto immediato l’accordo di consulenza del Sig. Arthur.

El 17 de agosto de 2025, Salarius Pharmaceuticals, Inc. informó que su Junta designó a Mark J. Rosenblum como director ejecutivo interino y lo designó como el principal oficial ejecutivo de la empresa. El nombramiento sigue a la renuncia del CEO David J. Arthur, quien renunció sin ninguna discrepancia reportada con la empresa y permanecerá como director para apoyar la finalización de la fusión previamente anunciada con Decoy Therapeutics Inc. El señor Rosenblum, de 72 años, continuará como Vicepresidente Ejecutivo y Director Financiero bajo su actual acuerdo de empleo; no se firmó ningún nuevo acuerdo de consultoría o empleo en relación con el nombramiento. La empresa también dio por terminado el acuerdo de consultoría del señor Arthur con efecto inmediato.

2025년 8월 17일, Salarius Pharmaceuticals, Inc.는 이사회가 Mark J. Rosenblum를 Acting Chief Executive Officer로 임명하고 그를 회사의 주요 경영책임자(CEO)로 지정했다고 발표했습니다. 이 임명은 David J. Arthur CEO의 사임에 따른 것이며, 회사와의 불일치가 보고되지 않았고 이전에 발표된 Decoy Therapeutics Inc.와의 합병 완성을 지원하기 위해 이사회에서 계속 남아 있을 것입니다. Rosenblum 씨(72세)는 기존 고용계약에 따라 계속해서 부사장 겸 최고재무책임자(CFO)로 남게 되며, 임명과 관련한 새로운 컨설팅 또는 고용 계약은 체결되지 않았습니다. 또한 회사는 Arthur 씨의 컨설팅 계약을 즉시 해지했습니다.

Le 17 août 2025, Salarius Pharmaceuticals, Inc. a annoncé que son conseil d’administration a nommé Mark J. Rosenblum en tant que président-directeur général par intérim et l’a désigné comme le principal dirigeant opérationnel de l’entreprise. Cette nomination fait suite à la démission du PDG David J. Arthur, qui a démissionné sans aucun désaccord signalé avec l’entreprise et restera administrateur pour soutenir l’achèvement de la fusion précédemment annoncée avec Decoy Therapeutics Inc. M. Rosenblum, 72 ans, continuera à occuper les fonctions de Vice-président exécutif et directeur financier en vertu de son contrat de travail existant; aucun nouveau contrat de conseil ou d’emploi n’a été conclu en relation avec la nomination. L’entreprise a également résilié le contrat de conseil de M. Arthur avec effet immédiat.

Am 17. August 2025 gab der Vorstand von Salarius Pharmaceuticals, Inc. bekannt, dass er Mark J. Rosenblum vorübergehend zum Chief Executive Officer ernannt und ihn zum wichtigsten geschäftsführenden leitenden Angestellten des Unternehmens ernannt hat. Die Ernennung erfolgt auf die Rücktritt von CEO David J. Arthur, der ohne berichtete Meinungsverschiedenheiten mit dem Unternehmen zurücktrat und als Direktor bestehen bleibt, um den Abschluss der zuvor angekündigten Fusion mit Decoy Therapeutics Inc. zu unterstützen. Herr Rosenblum, 72 Jahre alt, wird weiterhin als Executive Vice President und Chief Financial Officer gemäß seinem bestehenden Arbeitsvertrag tätig sein; es wurde kein neuer Beratungs- oder Arbeitsvertrag im Zusammenhang mit der Ernennung abgeschlossen. Das Unternehmen hat außerdem den Beratungsvertrag von Herrn Arthur mit sofortiger Wirkung beendet.

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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): August 17, 2025
SALARIUS PHARMACEUTICALS, INC.
(Exact name of registrant as specified in its charter)
Delaware 001-36812 46-5087339
(State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification Number)
     
2450 Holcombe Blvd.
Suite X
Houston, TX
 77021
(Address of principal executive offices) (Zip Code)
(713) 913-5608
(Registrant’s telephone number, including area code)
N/A
(Former name or former address, if changed since last report)
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 (see General Instruction A.2. below):
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, par value $0.0001
SLRX
The Nasdaq Capital Market
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 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On August 17, 2025, the Board of Directors (the “Board”) of Salarius Pharmaceuticals, Inc. (the “Company”) appointed Mark J. Rosenblum as the acting Chief Executive Officer of the Company and designated him as the Company’s “principal executive officer” (the “Acting CEO Appointment”). Mr. Rosenblum will also continue serving in his role as Executive Vice President and Chief Financial Officer of the Company.
The Acting CEO Appointment was made in connection with the resignation of David J. Arthur as Chief Executive Officer of the Company on August 17, 2025. Mr. Arthur’s resignation is not a result of any disagreement with the Company. Mr. Arthur continues to serve as a member of the Board and support the Company as it works to finalize its previously announced merger transaction with Decoy Therapeutics Inc. In connection with Mr. Arthur’s resignation, the Company terminated that certain Consulting Agreement, dated February 20, 2024, as amended, by and between the Company and Mr. Arthur, effective immediately.
Mr. Rosenblum, 72, has served as the Company’s Executive Vice President Finance and Chief Financial Officer since September 2019. Prior to September 2019, Mr. Rosenblum served as a financial consultant to the Company since February 2019. Prior to joining the Company, Mr. Rosenblum served as chairman, chief executive officer and a director of ActiveCare, Inc. (Nasdaq: ACAR), a healthcare company, from December 2017 to March 2019, which was sold to Biotelemetry, Inc (now Royal Philips (NYSE: PHG). Mr. Rosenblum worked as a financial consultant for various companies from 2014 to 2017. Prior to that, Mr. Rosenblum served as the chief financial officer of Advaxis, Inc. (Nasdaq: ADXS), a biotechnology company, from January 2010 to April 2014. From 1985 through 2003, Mr. Rosenblum was employed by Wellman, Inc., a global public chemical manufacturer, which was subsequently acquired by DAK Americas, serving in various capacities including chief accounting officer. Mr. Rosenblum holds both a Masters in Accountancy and a B.S. degree in Accounting from the University of South Carolina. Mr. Rosenblum began his career in 1977 with Haskins & Sells, CPA (currently known as Deloitte), was a licensed Certified Public Accountant for over 30 years, and is currently a member of the American Institute of Certified Public Accountants.

The Company did not enter into any new consulting or employment agreement with Mr. Rosenblum in connection with the PEO Appointment and the existing employment agreement between the Company and Mr. Rosenblum remains in effect. There is no arrangement or understanding between Mr. Rosenblum and any other person pursuant to which Mr. Rosenblum was appointed as acting CEO of the Company, and there is no family relationship between Mr. Rosenblum and any of the Company’s directors or other executive officers. There are no related party transactions between Mr. Rosenblum and the Company that would require disclosure under Item 404(a) of Regulation S-K.








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.
SALARIUS PHARMACEUTICALS, INC.
Date: August 18, 2025
By:
/s/ Mark J. Rosenblum
Mark J. Rosenblum
Executive Vice President & Chief Financial Officer

FAQ

What change did Salarius (SLRX) report on August 17, 2025?

The company appointed Mark J. Rosenblum as acting CEO and principal executive officer after the resignation of David J. Arthur.

Will Mark Rosenblum remain in his CFO role at SLRX?

Yes. Mr. Rosenblum will continue serving as Executive Vice President and Chief Financial Officer under his existing employment agreement.

Did David J. Arthur leave the company entirely?

No. Mr. Arthur resigned as CEO but remains a member of the Board to support the company’s pending merger with Decoy Therapeutics Inc.

Was a new employment or consulting agreement made for the acting CEO?

No. The company did not enter into any new consulting or employment agreement with Mr. Rosenblum in connection with the appointment.

Was Mr. Arthur’s consulting agreement continued after his resignation?

No. The company terminated the consulting agreement dated February 20, 2024, effective immediately.
Salarius Pharmaceuticals Inc

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