Mercury Systems is a defense electronics supplier trying to finish a factory-floor turnaround, and fiscal 2026 finally produced the demand evidence that turnaround required. Fourth-quarter bookings nearly doubled the prior peak and lifted funded backlog to a multi-year high, giving Andover more visibility into the next fiscal year than the company has carried in a long time. The investment debate is no longer whether prime contractors want Mercury boards and processing subsystems. It is whether the company can convert that order book into durable cash earnings before the share price treats the conversion as already complete.
The tension sits under the reported headlines. Full-year revenue grew at a high-single-digit clip while adjusted earnings before interest, taxes, depreciation, and amortization outpaced the top line, yet results under generally accepted accounting principles stayed negative and free cash flow, operating cash minus property and equipment spending, fell sharply as inventory and a large revolver paydown absorbed liquidity. Newer bookings carry better margins than the legacy development work still flowing through the factories. Until that mix shift finishes, reported profitability continues to lag the order book, and that lag is the entire equity story.
Management now guides fiscal 2027 revenue toward $1 billion. Adjusted earnings before those charges are pointed toward $200 million, while cash conversion is expected to stay below the long-run target because inventory is being built ahead of production. A Palantir factory-software pact and a small SolderMask process acquisition are the operational answers to the conversion question. The next year either proves that bookings become earnings, or the multiple compresses when cash stays scarce.