aTyr Pharma, Inc. (ATYR) Enacts 1-for-40 Reverse Split

What happened

aTyr Pharma will carry out a 1-for-40 reverse stock split effective Oct. 28, 2026, with split-adjusted trading starting Oct. 29, 2026. Outstanding shares will fall from about 100.5 million to about 2.5 million to help regain Nasdaq bid-price compliance.

Confirmed

Global impact / market context

The reverse split raises the price of each share to meet Nasdaq's minimum bid price, which means the listing is at risk without it. The much smaller share count can reduce trading activity and make the stock price swing more sharply.

Analyst inference

The company is dealing with a known Nasdaq bid-price deficiency and possible delisting. A lasting post-split price above the minimum, plus progress on clinical milestones, would make the situation a stronger catalyst for investors.

Analyst inference

What to watch

1. The split takes effect Oct. 28, 2026, at 5:00 p.m. Eastern Time, and split-adjusted trading begins Oct. 29, 2026, so orders and price charts will reflect the new share count. Confirmed
2. No fractional shares will be issued, and any fractions will be rounded up, which means small extra share amounts may appear and create slight dilution compared with exact handling. Confirmed
3. Watch whether the post-split share price stays above the Nasdaq minimum, since a sustained shortfall could renew delisting risk, while the smaller float may increase volatility. Analyst inference

Evidence

• globenewswire.com