SLS SELLAS Life Sciences Group Inc

During January 2018, the board of directors of the Company determined to request proposals from auditing firms for the Company’s 2017 audit. This decision was made following the completion of the business combination with SELLAS Life Sciences Group Ltd. (“ Private SELLAS ”) on December 29, 2017, and the subsequent relocation of the Company’s corporate headquarters and all operations of the combined company to New York, New York. As a result of the business combination, the financial statements of Private SELLAS, for which KPMG Audit Limited (“ KPMG Bermuda ”) served as the independent registered public accounting firm, became the financial statements of the Company. After review and consideration of various proposals, on March 6, 2018, the Company dismissed KPMG Bermuda as the Company’s independent registered public accounting firm, with immediate effect, and engaged Moss Adams LLP (“ Moss Adams ”) as the Company’s independent registered public accounting firm for the Company’s fiscal year ending December 31, 2017. The decision to continue the engagement of Moss Adams as the Company’s accountants was approved by the audit committee of the board of directors of the Company.

KPMG Bermuda’s audit reports on the Company’s financial statements (which, as a result of the business combination, are now the financial statements of Private SELLAS) for the years ended December 31, 2016 and 2015 contained a statement that “the Company has suffered recurring net losses since its inception and has an accumulated deficit of $30.4 million that raises substantial doubt about its ability to continue as a going concern. Management’s plan in regard to these matters are also described in Note 1. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.” In addition, KPMG Bermuda advised the Company that the Company has a material weakness in its internal control over financial reporting due to lack of sufficient management and personnel with appropriate expertise in GAAP and SEC rules and regulations with respect to financial reporting.

During the Company’s two most recent fiscal years and the subsequent interim period through March, 2018, the date of notification to KPMG Bermuda of its dismissal, there were no: (1) disagreements with KPMG Bermuda on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of KPMG Bermuda, would have caused it to refer to the subject matter thereof regarding its report, or (2) reportable events, as defined in Item 304(a)(1)(v) of Regulation S-K other than as noted above regarding the Company’s ability to continue as a going concern and the existence of material weaknesses in its internal control over financial reporting.

Moss Adams has been acting as the Company’s independent accounting firm since 2013 and reviewed the Company’s predecessor financial statements (e.g., prior to the business combination with Private SELLAS). Other than in connection with its engagement as the Company’s independent public accounting firm prior to the business combination with Private SELLAS, during the two most recent fiscal years and the subsequent interim period through March 6, 2018, neither the Company nor anyone acting on its behalf consulted Moss Adams regarding the application of accounting principles to any completed or proposed transactions nor regarding any matter that was the subject of a disagreement with the Company’s independent accountant or any reportable event, as defined in Item 304(a)(1)(v) of Regulation S-K.

The Company provided a copy of this Form 8-K to KPMG Bermuda on March 12, 2018 and requested that KPMG Bermuda furnish a letter addressed to the Securities and Exchange Commission stating whether or not it agrees with the above statements. KPMG Bermuda’s letter dated March 26, 2018 is filed as Exhibit 16.1 to this Amended Form 8-K.