Synaptics is no longer a standalone edge-silicon recovery story. The late-June agreement to sell the company to onsemi in a fixed-ratio stock swap recasts every common share as a claim on onsemi equity, not on Core IoT mix or mobile fade. Holders do not get cash. They get a set number of onsemi shares if the deal closes, which means the live value of Synaptics now tracks onsemi's multiple and cycle more than its own print. That is a different security than the one that spent two years proving a mix shift toward wireless and edge processors can lift operating margin.
The operating year still improved. Fiscal fourth-quarter revenue rose and non-GAAP operating margin reached a thirteen-quarter high, which is the evidence that the mix story was working on its own. Core IoT growth, however, slowed through the year, Mobile kept shrinking, and onsemi's shares have fallen hard enough that the live deal value sits well below the enterprise value advertised at announcement. The market is no longer paying a growth multiple for Astra and Veros. It is paying a spread to a mid-2027 close, and that spread has collapsed as the acquirer sold off.
Fiscal 2026 ended in late June with another year of double-digit growth and a large non-cash tax charge that wiped most of the domestic deferred-tax asset. Guidance is suspended. The chief financial officer resigned in August and the chief executive is now the principal financial officer until close. The open question is whether the merger completes at a ratio that still compensates holders for giving up a franchise that just expanded operating margin, or whether a break leaves them with a decelerating Core IoT book, convertible notes sitting in current liabilities, and a thinner equity account.