Christopher Gustanski, who serves as vice president of Operational Excellence at Phinia Inc. (NYSE:PHIN), completed a sale of 3,812 shares of the company's common stock on March 4, 2026, according to a Form 4 submitted to the Securities and Exchange Commission.
The shares changed hands at $72.728 apiece, producing a gross transaction value of $277,239. After the disposition, Gustanski is listed as directly holding 14,871 shares of Phinia, of which 6,744 are identified as restricted stock.
At the time of publication, Phinia's market quote stood at $67.22 per share - below the price at which Gustanski sold but representing approximately a 60% increase compared with the stock's level a year earlier. An InvestingPro assessment referenced in regulatory filings describes the shares as appearing slightly undervalued when measured against a Fair Value estimate and classifies PHIN among names on a Most Undervalued list. The same analysis highlights a price/earnings-to-growth (PEG) ratio of 0.24 for the company. The filing also notes that InvestingPro provides 10 additional exclusive tips for PHIN investors.
Separately, Phinia disclosed fourth-quarter results for 2025 that presented a mixed financial picture. Reported earnings per share for the quarter were $1.18, below the $1.22 forecast and representing a 3.28% negative surprise relative to analysts' expectations. Revenue for the quarter totaled $889 million, surpassing the $838 million consensus and producing a 6.09% positive surprise.
The combination of a revenue beat alongside an EPS miss framed the quarter as one where top-line strength offset a shortfall in per-share profitability. Company disclosures indicated investor interest in the company's strategic initiatives, reflected in resilient activity in pre-market trading after the results were posted. Those market reactions, according to the filing, underscore how revenue performance can influence investor sentiment even when EPS falls short.
This regulatory filing and the company's reported quarterly metrics together form the most recent public developments surrounding insider activity and financial performance at Phinia. The Form 4 provides the precise transaction details for Gustanski's sale; the earnings release supplies the comparable quarter-by-quarter outcomes for Q4 2025.