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SELLAS Life Sciences Group (SLS) stock: insider trades, news & valuation

Net buying
Close · Oct 9, 2026 $11.65 +3.5% on the day +513.2% over 12 months 52-week range $1.39 – $15.46

Share price and insider trades

SLS closeInsider buyInsider sale
05101520NovDecJan 2026FebMarAprMayJunJulAugSepOctBought $100,806 on 2025-11-19 · Katherine Bach Kalin
Bought, 12 months$101K
Sold, 12 months$0
Insiders buying1
Insiders selling0

SELLAS Life Sciences Group insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $101K and 0 sold $0 of SLS stock on the open market.

SLS insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q4 2025: $101K bought (1 trades)$101KQ4 2025Q1 2026Q2 2026Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0—0
Q2 2026—0—0
Q1 2026—0—0
Q4 2025$101K1—0

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day0.6×Last 5 sessions
Insiders' paper profit+$638KOn all tracked purchases +632.7%

Summary

Over the past 12 months, 1 SELLAS Life Sciences Group, Inc. insider reported open-market purchases totaling $101K, while 0 insiders reported sales totaling $0.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Nov 21SEC Katherine Bach KalinDirector Buy 63,400104,400 held (+155%) $1.59 $101K +632.7% —

Insiders at SELLAS Life Sciences Group, Inc.

InsiderBoughtSoldLast filingScore
Katherine Bach KalinDirector $101K — Nov 21, 2025 —

SLS stock: common questions

Are SELLAS Life Sciences Group, Inc. insiders buying SLS stock?

In the past 12 months, 1 insiders reported open-market purchases of SLS worth $101K. The latest was Director Katherine Bach Kalin bought $101K of SLS at $1.59 — first open-market purchase in our records; raises the stake by 155%.

Are SELLAS Life Sciences Group, Inc. insiders selling SLS stock?

0 insiders reported sales worth $0 over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is SLS's 52-week range?

Over the past year SLS has traded between $1.39 and $15.46. It last closed at $11.65 on Oct 9, 2026.