Niccolo de Masi Net Worth 2026: Estimate, Sources, How Verified

The most credible public estimate for Niccolo de Masi's net worth sits at approximately $133.5 million, based on SEC Form 4 insider holdings data as of November 2025. That figure comes from CoreStreet, which converts his reported IonQ share ownership into a dollar value at a specific stock-price snapshot. It is almost certainly a floor, not a ceiling, because it only captures what shows up in public securities filings and leaves out private assets, real estate, and earlier equity from roles at Glu Mobile, Essential Products, and the dMY Technology SPAC platform.

First, make sure you have the right person

The name 'Niccolo de Masi' is uncommon but not unique online. LinkedIn alone shows multiple profiles with the same or very similar spelling, which is exactly how net-worth aggregator pages end up attributing wealth to the wrong individual. Before trusting any estimate you find, confirm you are looking at the tech executive and current IonQ President and CEO, not a different person sharing the name.

The Niccolo de Masi with an established public net-worth footprint has a clear, documented career trail: CEO of Glu Mobile (a publicly traded mobile gaming company), President of Essential Products (a consumer hardware startup that raised over $300 million), President and Chief Innovation Officer at Resideo (announced in 2019), co-founder of dMY Technology Group (a SPAC platform, founded January 2020 with Harry You), IonQ board member since September 2021, and IonQ President and CEO since February 2025. SEC filings, press releases from Business Wire and IonQ's investor relations site, and a public LinkedIn profile all use the same spelling: 'Niccolo de Masi.' If a source you are reading is not referencing at least one of those affiliations, treat it with skepticism.

The net worth estimate and how current it is

CoreStreet pegs his net worth at at least $133,513,355.62 as of November 5, 2025. The phrasing 'at least' is intentional on their part: it reflects the minimum value derivable from publicly disclosed holdings. That same minimum figure is why many pages describe his duke castiglione net worth as an estimate rather than an exact total. You can apply the same source-checking approach when reviewing al madrigal net worth estimates duke castiglione net worth. GuruFocus and QuiverQuant maintain separate insider-ownership pages that pull from the same SEC Form 4 data pool, though they may apply different share-price timestamps, producing slightly different numbers. As of today, April 23, 2026, none of these sources have published a fresh recalculation that accounts for IonQ's stock price movements through early 2026, so the real current figure could be higher or lower depending on where IONQ trades right now.

Where the money likely comes from

Understanding the income sources behind the estimate matters because the $133M figure is almost entirely driven by equity, not cash salary. Here is how his wealth has likely accumulated over a career spanning roughly two decades of senior executive roles at publicly traded and venture-backed companies.

• IonQ equity and compensation: As CEO and a board member since 2021, he holds direct and indirect shares in IonQ (ticker: IONQ). His indirect ownership runs through Isalea Investments LP, an entity for which he serves as managing member, as disclosed in IonQ's Q1 2026 quarterly filing. Equity grants, restricted stock units, and stock options tied to IONQ's public market price are the single largest driver of current estimates.
• dMY Technology SPAC sponsorship: Co-founding a SPAC platform typically involves acquiring 'founder shares' at nominal cost, which convert into public equity after a merger closes. dMY Technology completed multiple SPAC deals (including the one that brought IonQ public in 2021). SPAC sponsor economics can generate substantial equity returns when a deal trades above the $10 trust value.
• Glu Mobile executive compensation: As CEO of Glu Mobile (a Nasdaq-listed company) for several years, he would have received salary, annual bonuses, and equity awards. Glu Mobile was later acquired by Electronic Arts in 2021 for approximately $2.4 billion, which would have accelerated vesting of any remaining equity.
• Essential Products and Resideo roles: Essential Products raised over $300 million from strategic investors. A founder or early executive role typically comes with meaningful equity. His subsequent role at Resideo (a publicly traded company spun out of Honeywell) added further public-company compensation.
• Earlier career equity: A Glu Mobile proxy filing notes his prior role as CEO and President of Hands-On Mobile, a predecessor/related entity, suggesting multiple equity layers built up over time before Glu's public market years.

What the estimate almost certainly excludes: private real estate holdings, cash savings and fixed-income investments, any carried interest or private fund economics from dMY vehicles not captured in public filings, vested options that have not yet been exercised, and any pre-IPO stakes in non-public companies. These gaps are structural, not accidental. Public Form 4 filings only report transactions in registered securities.

Why estimates differ across sources and change over time

Net worth figures for public executives fluctuate constantly, and different sites can show numbers that vary by tens of millions of dollars for the same person. The reasons are methodological, not errors in the usual sense.

1. Different snapshot dates: CoreStreet locked in its November 5, 2025 calculation. GuruFocus and QuiverQuant refresh at different intervals. IonQ's stock price swings significantly, so a 20% move in IONQ between two snapshot dates produces a very different headline number.
2. Direct versus indirect ownership: Some calculators count only shares held directly in his name. Others include indirect beneficial ownership through entities like Isalea Investments LP. IonQ's DEF 14A proxy statement spells out both categories; if an estimator misses the LP, they undercount.
3. Options and unvested awards: Outstanding stock options and unvested RSUs appear in proxy tables but may or may not be included in a net worth estimate depending on whether the site assumes exercise or vesting. Some sites include in-the-money options; others ignore unexercised awards entirely.
4. Private assets are invisible: No public filing discloses his bank accounts, real estate, or private investment portfolio. Every estimate you see is built exclusively on what was reported to the SEC.
5. Name conflation: If a net-worth site has accidentally merged data from a different 'Niccolo de Masi' into its profile, the resulting number is simply wrong. Always check that the affiliated companies listed match his actual career.

How to verify using credible public signals

You do not need to take any aggregator's word for it. Here is a practical verification workflow using primary sources.

1. Pull the IonQ DEF 14A directly from SEC EDGAR (search 'IonQ' under company filings, filter by proxy statements). Find the beneficial ownership table. It will list shares held directly and indirectly by Niccolo de Masi, including the Isalea Investments LP stake. This is the authoritative share count.
2. Cross-reference with SEC Form 4 filings under 'De Masi Niccolo' on EDGAR. Form 4 filings report every open-market purchase, sale, and grant of securities. They give you a running transaction log to verify what shares remain held.
3. Multiply the share count from Step 1 or 2 by IONQ's current share price to get a rough equity value. That is the core of what every estimator is doing; you can replicate it in seconds.
4. Check IonQ's investor relations site and Business Wire for the most recent press releases and earnings call transcripts. These confirm his current role and may include updated compensation disclosures.
5. Search his name on IonQ's news page to find public appearances (he testified before the Joint Economic Committee on quantum computing). These appearances confirm identity and can help you distinguish any name-sharing individuals.
6. Check the Isalea Investments LP entity in any state business registry (typically Delaware for investment vehicles) to confirm its existence and his listed role, which supports the indirect ownership figures in SEC filings.

Comparing estimates across sources

The honest interpretation of this range is: his publicly verifiable equity stake in IonQ alone was worth at least $133 million as of late 2025, and the true all-in figure is likely higher once you account for private assets and earlier career equity events. Think of it as a well-supported floor rather than a precise total. Any source showing a dramatically higher number (say, $300M or more) without citing specific non-IONQ assets should be treated as speculative unless it can point to a concrete data source.

How to stay current and avoid bad data

Net worth estimates for active executives are moving targets. If you are also comparing royalty-style biography figures, check how the duchess of Medinaceli net worth is typically presented versus what can be verified from reliable records. Niccolo de Masi's figure will shift with every IONQ earnings report, every Form 4 filing showing a sale or grant, and any changes to his role or compensation structure. Here is how to keep your information current and trustworthy. If you are looking for the best estimate of Niccolo Machiavelli net worth, treat it as a historical guess rather than a verified modern calculation. Cosimo de Medici's net worth is often discussed as a historical estimate, and researchers typically rely on primary accounts rather than modern SEC-style filings Cosimo de Medici net worth.

• Set up a free EDGAR alert for 'De Masi Niccolo' as an insider. You will receive notifications every time a new Form 4 is filed, which tells you about transactions in real time.
• Check IonQ's proxy statement (DEF 14A) each year after it is filed, typically in the spring. The beneficial ownership table is updated annually and gives you the cleanest authorized share count.
• Use IONQ's current trading price on any major financial data site to translate share counts into an up-to-date equity value. The SEC share counts stay accurate; only the price multiplier changes daily.
• Treat any net-worth website that does not cite SEC filings as its source with serious skepticism. For a public-company executive, SEC data is essentially the only reliable input. Sites that show round numbers (e.g., exactly '$150 million') without a methodology note are almost always guessing.
• Watch out for pages that list him without mentioning IonQ, dMY Technology, or Glu Mobile. If the affiliated companies do not match his documented career, the page has likely conflated him with another person.

If you are researching Niccolo de Masi alongside other executives or historical figures with similar-sounding names, it is worth noting that the net worth research process looks quite different depending on whether the subject is a current public-company CEO (where SEC filings provide a reliable backbone) versus a historical figure or private individual where no such documentation exists. For a current exec like de Masi, the SEC paper trail is genuinely useful and makes a meaningful estimate possible, even if it remains incomplete.