Applied Aerospace
& Defense

Applied Aerospace & Defense (AADX) is a manufacturer of specialized components — machined metal parts, structural assemblies, precision-engineered pieces — that go into military aircraft, helicopters, and defense systems. Think of them as a supplier to the suppliers: they make the parts that other companies need to build the planes and weapons the Pentagon buys. Almost all of their revenue comes from programs that have been running for decades, and most of their parts are the only ones certified for those programs. Nobody else is allowed to make them.

A private equity firm called Greenbriar bought the company, spent a few years acquiring several smaller manufacturers to add to it, and is now taking it public on the NYSE under the ticker AADX. As part of your compensation, you received incentive units — essentially a tiny fractional ownership stake (about 0.03%) — that pay out based on what the company is worth when the stock starts trading. Those units unlock in chunks over a two-year period after the IPO.

When we built the original analysis, we were working with the S-1 — the initial filing a company makes with the SEC before going public. It had a lot of useful information about the business: revenue, earnings, program details, the ownership structure. But it was missing the two most important numbers for figuring out what your units are worth: the share price and how much debt the company would have left after the IPO.

Companies filing an S-1 don't disclose the price yet — that comes later. And they often describe how they intend to use the money they raise without telling you the exact split. So we had to build a matrix of possibilities. We modeled six different values the market might place on the company (ranging from cheap to expensive by industry standards) and three different levels of remaining debt after the IPO (from "almost nothing paid down" to "most of it paid down"). That gave us 18 possible outcomes for your unit value. The original expected value — the probability-weighted center of that whole range — was about $761,000.

The assumptions weren't guesses. They were grounded in what comparable companies trade at and what a private equity firm typically does with IPO proceeds. But they were still assumptions, and the range was wide because the uncertainty was real.

On May 26, 2026, AADX filed an amendment to their S-1 — the S-1/A — which is the document that officially launches the IPO process. This filing answered both unknowns at once.

First, the price range: $18 to $21 per share, with $19.50 as the midpoint. This tells us what the market is expected to value the company at on day one. At the midpoint, the implied valuation is about 25.7 times the company's annual earnings before interest, taxes, and accounting adjustments — which is toward the upper end of what we'd modeled, and meaningfully above the 22x we'd used as the baseline.

Second — and this is the bigger deal — the filing disclosed exactly where the IPO money goes: essentially all of it pays down debt. The company is raising roughly $589 million and sending $589 million straight to the lenders. After the offering closes, AADX goes from carrying about $1 billion in debt to carrying $423 million. That matters because debt is a weight on a company's value — the equity your units are tied to is everything left over after you subtract the debt. Less debt means more equity, which means your units are worth more.

The short version: everything got better. The stock is pricing at a higher multiple than we'd assumed, and the company is carrying less debt than we'd assumed. Both of those things increase what your units are worth. The revised expected value — probability-weighted across the bear, base, and bull outcomes — is now about $1,040,000. That's up from the original $761,000, a roughly 37% increase.

Your units don't all unlock at once. They come in five equal chunks, one per quarter starting about a year after the IPO. The model accounts for the fact that the stock price in month 12 will be different from the stock price in month 24 — that's what the bear/base/bull scenarios capture. In the bear case (the stock falls 30–40% from the IPO price), you end up with around $545,000. In the base case (the stock rises 10–25%), you end up with around $1,066,000. In the bull case (the stock rises 40–80%), you end up with around $1,488,000. All three scenarios are in positive territory.

The main thing to watch now isn't the debt — that's been resolved. It's how Greenbriar sells their shares. They own 81% of the company after the IPO and sold nothing at the offering. That means they'll need to sell in organized blocks over the next year or two. Each time they do, they'll likely price their shares at a small discount, which can put temporary downward pressure on the stock. The comparable situation here is StandardAero (another PE-backed aerospace company that went public in October 2024): their sponsor did two large organized sales in the first seven months after the IPO without blowing up the stock. That's the most likely path for AADX too.

The thing that will most sharpen the picture in the near term is the final IPO price (expected the week of June 2–4) and the first earnings report after the company is public, which will confirm whether the underlying business is performing as the S-1 described. Until then, the numbers above are the best estimate we have.