Sellas Life Sciences Draws Significant Retail Buzz As Traders Eye REGAL Phase 3 Catalyst – SLS Stock Soars 15%

According to Stocktwits data, message volume on the platform surrounding the stock increased nearly 170% over the past 24 hours.
Representative image of a trending stock chart.
Representative image of a trending stock chart. (Photo: Getty Images)
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Arnab Paul·Stocktwits
Updated Mar 05, 2026   |   2:29 PM EST
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  • Sellas’ CEO referenced the company’s Phase 3 REGAL trial in a LinkedIn post, following its December update that the final analysis was approaching for GPS as a therapy in AML.
  • Anson Funds Management recently disclosed that it held a 4.9% stake in Sellas.
  • Last month, Sellas partnered with IMPACT-AML to advance AML treatments.

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Sellas Life Sciences Group Inc. (SLS) generated significant retail buzz on Monday as the stock shot up more than 15% to its highest levels in more than a month.

According to Stocktwits data, message volume on the platform increased nearly 170% over the past 24 hours.

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Retail Bullish On Potential Phase 3 REGAL Trial Results

Retail sentiment for SLS on Stocktwits remained in the ‘bullish’ territory over the past 24 hours, amid ‘high’ message volumes.

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On Sunday, Angelos M. Stergiou, President and CEO of Sellas, made a reference to the company’s Phase 3 REGAL trial in a post on LinkedIn. Last December, the company said it was nearing the final analysis from its Phase 3 REGAL trial for Galinpepimut-S (GPS) as a potential maintenance therapy in Acute Myeloid Leukemia (AML).

AML is a fast-growing blood and bone marrow cancer in which abnormal white blood cells crowd out healthy cells.

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One user said the REGAL data was the “ultimate catalyst.”

Another user said that “REGAL Phase 3 remains event-driven and approaching its final trigger.”

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According to an SEC filing last week, Anson Funds Management disclosed that it held a 4.9% stake in the company, prompting a user to call it a “very exciting time” for shareholders.

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IMPACT-AML Partnership

Last month, Sellas partnered with IMPACT-AML, a European initiative dedicated to advancing AML treatments, to conduct a multi-site European clinical study of SLS009, the company’s selective CDK9 inhibitor.

The stock came under some selling pressure in January over dilution fears after the company said it received about $26.5 million from the exercise of common stock warrants.

Year-to-date, SLS shares have gained around 3%.

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Read also: Why Did SW, IP, PKG Stocks Slump Today?

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