Septerna, Inc.

SEPN · NasdaqGM · Stock · Healthcare
$36.32
-0.26% today
Delayed price,

What Septerna does

Septerna, Inc., a clinical-stage biotechnology company, discovers and develops G protein-coupled receptor (GPCR) oral small molecule products for the treatment of endocrinology, immunology and inflammation, and metabolic diseases. It develops PTH1R Program, oral small molecule Parathyroid Hormone 1 Receptor agonists for the treatment of hypoparathyroidism; SEP-631, an oral small molecule MRGPRX2 negative allosteric modulator (NAM) for chronic spontaneous urticaria and other mast cell diseases; and TSHR Program, an oral small molecule TSHR NAM for graves' disease and thyroid eye disease. In addition, it focuses on other therapeutic areas, including neurology, women's health, cardiovascular disease, and respiratory disease. It has global collaboration and license agreement with Novo Nordisk to discover, develop and commercialize multiple potential oral small molecule therapies for metabolic-related diseases based on certain specified molecular targets. The company was formerly known as GPCR NewCo, Inc. and changed its name to Septerna Inc. in June 2021. Septerna, Inc. was incorporated in 2019 and is headquartered in South San Francisco, California.

Key facts

Sector
Healthcare
Industry
Biotechnology
Market cap
$1.70B
P/E (ttm)
—
Forward P/E
-18.7
Dividend yield
0.00%
Beta
—
Profit margin
-24.5%
Employees
123
Headquarters
South San Francisco, CA, United States
Exchange
NasdaqGM

Performance

1 Month
-6.1%
3 Months
+8.7%
6 Months
+39.0%
1 Year
+64.6%
5 Years
+43.6%
$17.5552-week range$51.10
Biggest setback — last 12 months
-21.9%
15 Dec 2025 → 6 Apr 2026
Fell from $29.58 to $23.09 — its sharpest sustained decline this year.
Biggest run-up — last 12 months
+140.4%
3 Nov 2025 → 10 Aug 2026
Ran from $18.51 to $44.50 — its strongest sustained advance this year.

Price outlook — trend & volatility model

● Trend: Above long-term trend
Price sits above its 200-day average, but the shorter-term averages are not cleanly aligned above/below it.
HorizonBear case (−1σ)Base caseBull case (+1σ)
1 Month$30.22 (-16.8%)$36.32$43.66 (+20.2%)
3 Months$26.41 (-27.3%)$36.32$49.95 (+37.5%)
6 Months$23.14 (-36.3%)$36.32$57.00 (+56.9%)
12 Months$19.20 (-47.1%)$36.32$68.70 (+89.1%)
Statistical, not machine-learning: a random-walk (no assumed drift) volatility model built from this ticker's own realized price history, plus a purely descriptive moving-average trend read. Illustrative only — not a price target and not financial advice. The bear and bull cases sit one standard deviation (1σ) below and above today's price, a range that covers about 68% of the outcomes the model treats as plausible, not a 68% chance of either case. Annualized volatility used: 63.7%, blended from this ticker's own 3-month and 1-year realized price history. Base case is deliberately flat — this quantifies a possible range, not a directional prediction. See the full model, including wider (≈95%) bands →

Comparable companies

Recent headlines

Recent insider activity

Acquired 275,000 shares — Patni Rajiv, Chief Medical Officer · 2026-09-10
Sold 6,666 shares at $37.83 — Long Daniel D., SVP, Drug Discovery · 2026-09-03
Sold 147,200 shares at $51.08 — Third Rock Ventures V, L.P., 10% Owner · 2026-08-14
Sold 50,000 shares at $44.00 — Bhatt Elizabeth, President and COO · 2026-08-13
Sold 6,668 shares at $34.68 — Long Daniel D., SVP, Drug Discovery · 2026-08-05
Source: SEC Form 4 filings. An "acquired" entry with no price is typically a stock award or option exercise rather than an open-market purchase. Search all insider trades →

Learn the basics

Prices and company data are delayed reference figures from public sources (Yahoo Finance, SEC EDGAR) and may be inaccurate or out of date. This page is informational only — it is not investment advice or a recommendation to buy or sell any security. Past performance does not indicate future results.