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Annual figures as reported in 10-K / 20-F / 40-F filings.
SLS · CIK 0001390478

SELLAS Life Sciences Group, Inc.

Annual figures as reported, FY2014–FY2025. Ratios and growth rates derived on-page.

SLS logo
Pharmaceutical Preparations
Company profile
Nasdaq · SLSHQ New York, NYIncorporated in DEFiscal year ends Dec 31Non-accelerated filer Smaller reporting company
Revenue
$0
▼ −100.0% vs FY2022
Net income
−$26.9M
▲ +13.0% vs FY2024
Operating cash flow
−$28.4M
▲ +19.8% vs FY2024
Diluted EPS
−$0.25
▲ +50.0% vs FY2024

Revenue

Annual, as reported

02.5M5M7.5M’14’19’20’21’22’23$0

Net income

Losses shown in terracotta

−60M−40M−20M0’14’16’18’20’22’24’25−$26.9M

Recent quarters

momentum · last 12 quarters
Net income — Mar ’26 quarter
−$8.4M
▼ −44.6% vs Mar ’25
Diluted EPS — trailing 12 months
−$0.23
▲ +36.1% vs Mar ’25

Quarterly net income

Losses shown in terracotta

−7.5M−5M−2.5M0Jun ’23Dec ’23Jun ’24Dec ’24Jun ’25Dec ’25Mar ’26−$8.4M
QuarterRevenueRev. YoYGross marginNet incomeNet marginDiluted EPS
Mar ’26———−$8.4M—−$0.05
Dec ’25———−$7.7M—−$0.05
Sep ’25———−$6.8M—−$0.06
Jun ’25———−$6.6M—−$0.07
Mar ’25———−$5.8M—−$0.07
Dec ’24———−$6.7M—−$0.06
Sep ’24———−$7.1M—−$0.10
Jun ’24———−$7.5M—−$0.13

Profitability & returns

quality of earnings

Margins

Share of revenue kept at each line

-4000%-2000%0%’14’20’21’22
Gross marginOperating marginNet margin

Returns on capital

Net income vs year-end equity and assets

-1000%-500%0%’14’16’18’20’22’24
Return on equityReturn on assets

Cash flow

cash generation

Operating cash flow

Net cash from operations

−40M−20M0’14’16’18’20’22’24’25−$28.4M

Shareholder returns

capital allocation

Diluted shares outstanding

Falling count means buybacks outpace dilution

050M100M’20’21’22’23’24’25109M

Balance sheet

financial position

Stockholders’ equity

At fiscal year end

025M50M’14’16’18’20’22’24’25$70.9M

Growth rates

compounding, annualized
Share count change (split-adjusted)
+1267.1%
5y

Key ratios

derived per fiscal year
Fiscal yearGross marginOp. marginNet marginROEROACurrent ratio
FY2025———−37.9%−34.3%10.72×
FY2024———−326.3%−158.9%1.72×
FY2023————−600.4%0.23×
FY202290.0%−4195.0%−4130.1%−851.4%−197.2%1.14×
FY202197.4%−332.8%−272.4%−101.7%−78.8%4.63×
FY2020100.0%−893.8%−881.9%−59.9%−36.4%2.99×
FY2019———−316.6%−116.2%1.56×
FY2018———−527.6%−163.6%0.98×
FY2017———−1147.5%−70.9%0.53×
FY2016————−275.4%1.11×
FY2015————−77.8%0.94×
FY201484.9%−471.1%−392.8%−98.8%−45.5%1.91×

Annual figures

as reported
Fiscal yearRevenueGross profitOp. incomeNet incomeDiluted EPSOp. cash flowCapexTotal assetsLiabilitiesEquityCashLT debt
FY2025——−$28.3M−$26.9M−$0.25−$28.4M—$78.3M$7.5M$70.9M$71.8M—
FY2024——−$31.5M−$30.9M−$0.50−$35.4M—$19.4M$10.0M$9.5M$13.9M—
FY2023$0$0−$37.9M−$37.3M−$1.34−$31.4M—$6.2M$14.2M−$8.0M$2.5M—
FY2022$1.0M$900K−$42.0M−$41.3M−$2.13−$23.8M—$20.9M$16.1M$4.9M$17.1M—
FY2021$7.6M$7.4M−$25.3M−$20.7M−$1.34−$26.0M—$26.3M$5.9M$20.3M$21.4M—
FY2020$1.9M$1.9M−$17.0M−$16.8M−$2.11−$10.4M—$46.0M$18.1M$28.0M$35.3M—
FY2019$0—−$20.0M−$19.3M−$10.92−$17.6M—$16.6M$10.5M$6.1M$7.3M—
FY2018———−$27.7M−$157.72−$30.4M—$16.9M$11.7M$5.2M$5.3M—
FY2017——−$23.0M−$23.8M−$10.44−$11.0M—$33.5M$31.5M$2.1M$2.3M—
FY2016——−$16.0M−$17.7M−$18.66−$11.8M—$6.4M$11.4M−$5.0M$6.0M—
FY2015——−$34.2M−$63.9M−$8.23−$48.2M—$82.1M$68.6M−$12.3M$1.4M—
FY2014$9.3M$7.9M−$43.9M−$36.6M−$6.13−$42.9M—$80.5M$43.4M$37.1M$23.6M—

Latest filings

the most recent regulatory filings
8-KCurrent report — material event2026-06-25 ↗8-KCurrent report — material event2026-06-18 ↗4OWNERSHIP DOCUMENT2026-06-18 ↗S-8Securities registration2026-06-16 ↗8-KCurrent report — material event2026-06-02 ↗8-KCurrent report — material event2026-05-12 ↗10-QQuarterly report2026-05-12 ↗SCHEDULE 13G/ASEC filing2026-04-24 ↗ARSSEC filing2026-04-23 ↗DEFA14AProxy statement2026-04-23 ↗

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