MetaCap

Cullinan Therapeutics (CGEM) vs Seaport Therapeutics (SPTX)

Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.

Summary

Cullinan Therapeutics is the larger company by market cap ($960.6 million vs $945.9 million), about 1.0 times the size.

Summary generated from market data by MetaCap's automated system. Methodology

Relative performance

CGEM+16.38%SPTX-9.63%
+76%+24%-28%
May 1, 20261 yearOct 7, 2026
CGEM+16.38%SPTX-9.63%
+69%+23%-23%
Apr 27, 20265 yearsOct 5, 2026

Percent change in share price from the first common trading day shown; excludes dividends.

Head-to-head

CGEM versus SPTX key metrics
MetricCGEMSPTX
Share price$15.63$17.67
Market cap$960.59M$945.88M
1-day change-3.82%-1.45%
YTD return+51.01%—
1-year return+165.37%—
5-year return-37.48%—
EPS (TTM)$-3.11$-5.81
Dividend yield0.00%0.00%
Annual dividend$0.00$0.00
52-week high$23.19$28.38
52-week low$6.50$14.85
Distance from 52-week high-32.60%-37.74%
Analyst consensusstrong_buystrong_buy
Avg. price target upside+114.01%+116.69%
Average volume871.08K182.18K
Shares outstanding61.46M53.53M
Employees10958
SectorHealth CareHealth Care
IndustryBiotechnology: Biological Products (No Diagnostic Substances)Biotechnology: Pharmaceutical Preparations

Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.

About Cullinan Therapeutics

CGEM stock →

Cullinan Therapeutics, Inc., a clinical-stage biopharmaceutical company, develops therapies for autoimmune diseases and cancer in the United States. It engages in the development of CLN-978, a CD19xCD3 bispecific T cell engager for autoimmune diseases in Phase 1 clinical trials; Velinotamig, a BCMAxCD3 bispecific T cell in Phase 1 clinical trials in patients with autoimmune diseases; and CLN-049, a FLT3xCD3 bispecific T cell engager, which is in Phase 1 clinical trials in patients with relapsed and refractory acute myeloid leukemia or myelodysplastic syndrome.

Health Care · Biotechnology: Biological Products (No Diagnostic Substances) · 109 employees

About Seaport Therapeutics

SPTX stock →

Seaport Therapeutics, Inc., a clinical-stage therapeutics company, focuses on inventing and developing new medicines for patients with depression, anxiety, and other debilitating neuropsychiatric disorders. It is leveraging its proprietary Glyph platform to advance a pipeline of therapies to address the unmet needs in depression and anxiety.

Health Care · Biotechnology: Pharmaceutical Preparations · 58 employees

CGEM vs SPTX FAQ

Which is bigger, Cullinan Therapeutics or Seaport Therapeutics?

Cullinan Therapeutics (CGEM) is larger, with a market capitalization of $960.59M compared with $945.88M for Seaport Therapeutics (SPTX).

Are Cullinan Therapeutics and Seaport Therapeutics in the same industry?

Both are in the Health Care sector, but in different industries: Biotechnology: Biological Products (No Diagnostic Substances) for Cullinan Therapeutics and Biotechnology: Pharmaceutical Preparations for Seaport Therapeutics.

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