William Kozyra Net Worth Estimate: Sources and Method

Based on the most current aggregator data available, William L. Kozyra's estimated net worth falls somewhere between $213,000 and $911,222 depending on the source and date of calculation. If you are looking up vince kozar net worth, use the same approach and verify which public filings and dates the estimate is based on. That's a wide gap, and the difference comes down almost entirely to methodology, specifically, what assets each platform counted and when they ran their calculation. Neither figure is wrong per se, but neither should be taken as gospel either. If you are comparing figures for Wayne Kocourek net worth, look for the same SEC filing-based approach and check the calculation date behind any published estimate.

The net worth range at a glance

It's worth noting upfront that both of these figures reflect publicly trackable assets, primarily equity holdings in companies where Kozyra has served as an officer or director. His actual personal wealth, once you factor in private business interests, real estate, retirement accounts, and other non-disclosed assets, is almost certainly higher than either published estimate.

Who William Kozyra is and why anyone is tracking his wealth

William Lawrence Kozyra is a veteran automotive-industry executive based in the Detroit area. He spent the bulk of his career in Tier 1 automotive supply, most notably as Chairman and CEO of TI Fluid Systems (formerly TI Automotive Ltd.) from 2008 until his retirement on October 1, 2021. Before TI Fluid Systems, he held senior leadership positions at Continental AG NAFTA and ITT Automotive, two major names in global automotive components.

Since retiring from TI Fluid Systems in 2021 (with his formal departure confirmed in 2022 filings), Kozyra has remained active in the industry. He has served as a Director at American Axle and Manufacturing (AAM) since 2015, a role that continues to generate publicly trackable compensation and equity disclosures. He also appears to have pivoted toward private business ownership: public records show his acquisition of Alco Plastics, and state and corporate filings connect him to Wilko Plastics, Inc. in Michigan and WLK Motor Enclave, LLC in Florida.

His wealth is tracked primarily because of his director role at AAM, a publicly traded company. Any time a named executive or board member buys or sells shares in a public company, that transaction is filed with the SEC, and financial aggregators like Benzinga and MarketScreener pull those filings to estimate that person's current holdings. That's the engine behind the figures you see published online.

How these estimates are actually built

Net worth estimates for corporate executives like Kozyra don't come from interviews or self-reporting. They come from required SEC filings. When someone serves as a director or named officer at a public company, they must disclose share ownership on forms like the DEF 14A (proxy statement), Form 4 (insider transaction reports), and the company's annual 10-K. Financial data platforms then multiply disclosed share counts by current stock prices to produce a holdings-based net worth estimate.

That methodology has a built-in flaw: it only captures what's in the SEC record. Retirement savings, private company equity (like a stake in Wilko Plastics or Alco Plastics), real estate, and cash accounts are invisible to these platforms unless they're independently reported somewhere. So the $213K and $911K figures are best understood as a floor, the minimum verifiable public footprint, not a ceiling on his actual wealth.

The discrepancy between the two figures most likely comes down to timing and scope. MarketScreener's February 2026 snapshot may have included a broader set of assets or captured a period when AAM's stock price was higher. Benzinga's May 2026 recalculation may reflect a decline in share value, a different counting methodology, or a narrower set of included holdings. Stock price fluctuations alone can easily produce a 4x swing in estimated equity net worth for someone holding a modest number of shares.

Career earnings and assets that likely drive his real wealth

Running a global automotive supplier as CEO for 13 years (2008–2021) at a company the scale of TI Fluid Systems puts Kozyra in a compensation tier that goes well beyond what SEC insider-trading trackers pick up. TI Fluid Systems' 2021 annual report references his Long-Term Incentive Plan (LTIP) grants, which are standard for executives at publicly listed companies and can represent millions of dollars over a multi-year vesting period. While the exact figures aren't fully public, LTIP payouts of this type often represent the single largest component of a senior executive's total lifetime compensation.

His continued board seat at AAM adds a more modest but ongoing income stream. Public company director compensation typically includes an annual cash retainer plus equity grants, often totaling $200,000–$350,000 per year at mid-to-large-cap manufacturers, though the exact AAM director pay package would be confirmed in their proxy statements.

Beyond corporate compensation, there are meaningful private business signals. PlasticsToday reported that Kozyra acquired Alco Plastics, and Michigan Treasury records connect him to Wilko Plastics, Inc., a family-tied business that also involves William E. Kozyra II. A Florida LLC, WLK Motor Enclave, lists him as manager (document number L21000205970, status Active). These aren't liquid public assets, but they represent real business ownership that aggregator sites simply can't see.

• 13 years as CEO/Chairman of TI Fluid Systems: base salary, annual bonuses, and LTIP grants (primary historical wealth driver)
• Ongoing AAM board director compensation: annual retainer plus equity (active income stream)
• Private equity in Alco Plastics and Wilko Plastics, Inc.: not publicly valued but represents business ownership
• WLK Motor Enclave, LLC (Florida): active business entity; nature and value unknown from public records
• Equity holdings in AAM: the primary source of published net worth estimates ($213K–$911K range)

Why the numbers vary and what to watch out for

The biggest pitfall with executive net worth estimates is treating a single aggregator number as fact. The $213K Benzinga figure and the $911K MarketScreener figure are both derived from public filings, but they represent different moments in time and possibly different methodologies. Neither is a fraud, but neither is a complete picture either.

There's also the name disambiguation issue. William Kozyra is not an ultra-rare name. The University of Detroit Mercy's board page lists a "William Kozyra '80" connected to a Chairman and CEO role, and PR Newswire references the Wilko Plastics family transition involving William E. Kozyra II alongside William L. Kozyra. When you're reading any net worth estimate online, confirm you're looking at William Lawrence Kozyra, the automotive executive and AAM director, not a family member or someone with a similar name.

Another factor: stock prices move. AAM's share price in early 2025 versus mid-2026 may differ significantly, which directly changes the calculated value of any equity holdings. An estimate that was accurate in February 2026 could be off by 30–50% by June 2026 if the stock moved materially. Always check when an estimate was last refreshed.

Finally, watch for aggregator sites that publish round numbers like "$5 million" or "$10 million" with no sourcing or methodology. If you're comparing estimates across different sports and entertainment figures, you may also be wondering what is coach K's net worth and how similar methodologies affect the numbers. For someone like Kozyra, a well-compensated but not ultra-high-profile executive, those figures are almost certainly fabricated. If you're specifically trying to understand Coach Kozak net worth, the same logic applies: aggregator figures vary based on what filings include and when they were calculated For someone like Kozyra. The two data-backed estimates in the $213K–$911K range are more credible precisely because they're tied to specific filing dates and real share counts. If you are looking for nick kozmin net worth, the same approach applies: check what is actually disclosed in filings and compare multiple aggregators $213K–$911K range.

How to check this yourself

If you want to go beyond aggregator estimates and look at the underlying evidence, here's where to start. SEC EDGAR (edgar.sec.gov) is the primary source for any publicly disclosed financial information tied to Kozyra's role at AAM. Search his name in the full-text search or look up AAM's (American Axle and Manufacturing) most recent DEF 14A proxy statement, which will list director compensation and share ownership tables. Form 4 filings will show any recent insider buy or sell transactions.

1. Go to SEC EDGAR (edgar.sec.gov) and search for "William Kozyra" or look up American Axle and Manufacturing (ticker: AXL) filings directly
2. Open the most recent DEF 14A (proxy statement) and find the director compensation table and share ownership table
3. Check Form 4 filings under his name for any recent insider transactions, which show current share counts
4. Multiply disclosed share count by AAM's current stock price to get a rough equity value estimate
5. Review TI Fluid Systems' 2021 annual report (available on their investor relations page) for LTIP and CEO compensation context from his tenure
6. Cross-reference with MarketScreener and Benzinga, noting the date each figure was last calculated
7. Search Michigan and Florida business entity databases for Wilko Plastics and WLK Motor Enclave to confirm active status and any publicly filed financials

This process won't give you a complete picture of his personal wealth, no public process can, but it will let you confirm that the published estimates are at least grounded in real filings rather than guesswork. For anyone researching executives in the automotive supply space, this same method applies to other industry figures as well. If you are also researching coach Kozyra and Claudia’s net worth, you can use the same approach to separate verified public information from speculation coach kozak and claudia net worth. The principle is the same whether you're looking at a board director at a mid-cap manufacturer or a higher-profile name: follow the SEC filings first, treat aggregator numbers as a starting point, and always note the calculation date.