Every Form 4 that SELLAS Life Sciences Group, Inc. (SLS) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow SLS and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SLS filings page.
Stergiou Angelos M. reported acquisition or exercise transactions in this Form 4 filing.
SELLAS Life Sciences Group reported that President and CEO Angelos M. Stergiou received a grant of 1,065,000 restricted stock units on June 16, 2026. These RSUs vest 25% on December 1, 2026 and 25% on each December 1 thereafter, subject to continued service, bringing his direct holdings to 1,759,183 shares.
SELLAS Life Sciences Group, Inc. director equity grant: Director John Varian received an award of 50,000 restricted stock units on January 7, 2026. These units will vest in full on December 1, 2026, as long as he continues to serve on the company’s Board of Directors through that date. Following this award, he beneficially owns 72,900 shares of SELLAS common stock in direct ownership. The RSUs were granted at a price of $0.00 per unit, reflecting a typical non-cash equity compensation grant to a board member.
SELLAS Life Sciences Group, Inc. reported that director Robert L. Van Nostrand received an equity award in the form of 50,000 shares of common stock on January 7, 2026. The award represents restricted stock units that were granted at a price of $0.00 per share, reflecting a compensatory grant rather than a market purchase. Following this grant, Van Nostrand beneficially owns 82,900 shares of SELLAS common stock. According to the terms, the 50,000 restricted stock units will vest in full on December 1, 2026, provided he continues to serve on the company’s Board of Directors through that date.
SELLAS Life Sciences Group director David A. Scheinberg reported receiving an equity award in the form of restricted stock units. On January 7, 2026, he was granted 50,000 restricted stock units (RSUs) of the company’s common stock at a stated price of $0.00 per share, reflecting a compensatory grant rather than a purchase. According to the award terms, these RSUs are scheduled to vest in full on December 1, 2026, provided he continues to serve on the company’s Board of Directors through that date. Following this grant, he beneficially owned 73,082 shares of SELLAS common stock in total, held directly.
SELLAS Life Sciences Group, Inc. reported an equity award to a senior executive. SVP and Chief Development Officer Dragan Cicic received an award of 300,000 restricted stock units on January 7, 2026. These RSUs are scheduled to vest 25% on December 1, 2026, and 25% on each December 1 thereafter until fully vested, as long as he remains in service with the company on each vesting date. Following this grant, Cicic is shown as beneficially owning 557,805 shares of common stock, held directly. The transaction was reported at a price of $0.00 per share, reflecting the nature of the RSU award rather than a market purchase.
SELLAS Life Sciences Group, Inc. reported that its CFO, John Thomas Burns, received an award of 300,000 restricted stock units of common stock on January 7, 2026. The Form 4 shows this as an acquisition at a price of $0.00 per share, reflecting an equity compensation grant rather than an open‑market purchase.
The RSUs are scheduled to vest over four years: 25% on December 1, 2026 and 25% on each December 1 thereafter, as long as he remains in service with the company through each vesting date. After this grant, Burns is reported to beneficially own 554,327 shares of common stock, held directly.
SELLAS Life Sciences Group director Katherine Bach Kalin reported receiving 50,000 shares of common stock as a stock-based award. The Form 4 shows the transaction occurred on January 7, 2026 and was coded as an acquisition at a price of $0.00 per share, reflecting a grant rather than an open-market purchase.
According to the disclosure, the grant represents 50,000 restricted stock units that will vest in full on December 1, 2026, provided she continues to serve on the company’s board of directors through that date. After this award, she beneficially owns 154,400 shares of SELLAS common stock, held directly.
SELLAS Life Sciences Group, Inc. director Jane Wasman reported receiving an award of 50,000 restricted stock units of common stock on January 7, 2026. The filing states that these RSUs will vest in full on December 1, 2026, provided she continues to serve on the company’s Board of Directors through that date. The award was reported at a price of $0.00 per share, reflecting a grant of equity compensation rather than a market purchase. Following this grant, she beneficially owns 92,900 shares of SELLAS common stock in direct ownership.
SELLAS Life Sciences Group, Inc. reported an insider ownership change by its Chief Financial Officer, John Thomas Burns. On 12/03/2025, the company withheld 58,592 shares of common stock at $1.5 per share to cover the CFO’s tax withholding obligations related to vesting Restricted Stock Units. This reduced his holdings but did not involve an open-market sale. Following the transaction, Burns beneficially owns 254,327 shares of SELLAS common stock directly.
SELLAS Life Sciences Group, Inc. director reports open-market stock purchase. Director Katherine Bach Kalin bought 63,400 shares of SELLAS common stock on 11/19/2025 in an open-market transaction coded as a purchase. The filing shows a weighted average purchase price of $1.59 per share, with individual trades executed between $1.555 and $1.625 per share. Following this transaction, she beneficially owns 104,400 shares of SELLAS common stock in direct ownership.