Neogen Corp (NEOG) shares plummeted 8.49% in Tuesday's trading session following the release of its fourth-quarter 2025 financial results, which fell significantly short of analyst expectations and revealed a substantial net loss.

The food and animal safety products company reported adjusted earnings per share of $0.05 for the quarter, missing the analyst consensus estimate of $0.09 by 44.44%. This marks a steep 50% decrease from the $0.10 per share earned in the same period last year. More alarmingly, Neogen posted a staggering net loss of $612.196 million for the quarter, equivalent to -$2.82 per share, which appears to be the primary driver behind the sharp stock decline.

Despite the earnings disappointment, Neogen's quarterly revenue of $225.459 million slightly exceeded analyst estimates of $221.923 million. However, this still represented a 4.79% decrease compared to the previous year's $236.794 million. Looking ahead, the company provided guidance for fiscal year 2026, projecting revenue in the range of $820 million to $840 million and adjusted EBITDA between $165 million and $175 million. However, these forward-looking projections seem to have done little to alleviate investor concerns about the company's current performance, as reflected in the significant stock price drop.