Stock Markets February 26, 2026

Larimar Therapeutics Falls After $100M Upsized Share Sale; Stock Pulls Back Premarket

Company sells 20 million shares at $5 each to back development of nomlabofusp as shares retreat from a weekly surge

By Marcus Reed LRMR
Larimar Therapeutics Falls After $100M Upsized Share Sale; Stock Pulls Back Premarket
LRMR

Larimar Therapeutics priced an expanded $100 million follow-on offering late Wednesday, selling 20 million shares at $5 apiece. The move sent the stock lower in premarket trading even after a prior week of strong gains tied to an FDA breakthrough designation for its therapy nomlabofusp. Proceeds will support clinical development and general corporate needs.

Key Points

  • Larimar priced an upsized $100 million follow-on offering, selling 20 million shares at $5 each - impact on capital structure and share count is immediate.
  • Stock pulled back about 8.7% in premarket trading despite a 91% rally over the past week and a recent FDA breakthrough therapy designation for nomlabofusp - market volatility increased.
  • Proceeds are designated to fund nomlabofusp development along with working capital, R&D and commercialization expenses; JP Morgan and Guggenheim led the offering with LifeSci Capital and William Blair as additional bookrunners.

Larimar Therapeutics saw its shares move lower in premarket activity after the company disclosed an upsized secondary offering. The stock traded down 8.7% to $5.43 before the opening bell following the pricing of a $100 million follow-on transaction.

Late Wednesday the Bala Cynwyd, Pennsylvania-based firm sold 20 million shares at $5.00 each. The offering was expanded from an initial $75 million target and was priced at roughly a 16% discount to the prior market close.

The share sale comes after an eye-catching run in the stock. Larimar surged about 91% over the past week, carrying the price up near its 52-week high of $6.42 and putting the company's market capitalization at approximately $509 million. That rally included a roughly 61% jump on Wednesday, which followed a 31% gain on Tuesday after the U.S. Food and Drug Administration granted breakthrough therapy designation for Larimar's neurological disorder treatment candidate, nomlabofusp.

Management said net proceeds from the offering will be used to advance nomlabofusp's development and to fund working capital and general corporate purposes, including research and development and commercialization expenses.

Available company financial metrics show a current ratio of 4.06 and indicate Larimar holds more cash than debt on its balance sheet, though the company is depleting cash at a rapid pace. A Fair Value assessment included with the financial data suggests the stock is trading slightly above estimated fair value.

Investment banks serving as joint bookrunners on the deal were JP Morgan and Guggenheim, with LifeSci Capital and William Blair also participating in the transaction.


Context and market reaction

Investors reacted to the enlarged share sale with a premarket pullback, even as recent regulatory news had driven a sharp acceleration in the share price earlier in the week. The offering's discount to the prior close and its size relative to the company contributed to immediate selling pressure ahead of the regular session.

What the company will finance

The firm specified that proceeds are earmarked primarily to support the clinical and development work for nomlabofusp, alongside general corporate needs such as R&D and commercialization planning.


Note on data - Financial ratios and the Fair Value commentary referenced above reflect available company-level metrics and valuation indicators.

Risks

  • Share dilution and the offering's 16% discount to the prior close increased near-term selling pressure - this affects equity holders and market liquidity in the healthcare and biotech sectors.
  • The company is burning cash quickly despite holding more cash than debt and a current ratio of 4.06 - continued cash consumption may require further financings, affecting the biotech financing market and investor returns.
  • Valuation metrics indicate the stock is trading slightly above estimated fair value - there is downside risk if clinical or commercial progress for nomlabofusp does not meet expectations, impacting healthcare and small-cap biotech investors.

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