The above button links to Coinbase. Yahoo Finance is not a broker-dealer or investment adviser and does not offer securities or cryptocurrencies for sale or facilitate trading. Coinbase pays us for certain activity generated through this link. Prices displayed are informational.

Countless investors worldwide are eagerly awaiting their chance to bet on SpaceX’s future success through the company’s targeted $75 billion IPO, slated to be the largest, and perhaps most talked-about in history.

But before the 555,555,555 shares (1) in Elon Musk’s space exploration baby hits the public market on June 12 (2), thousands of people will already be laughing with the knowledge that the value of their existing stake is about to be pushed into the stratosphere.

Robert Kiyosaki says this 1 asset will surge 400% in a year and begs investors not to miss this ‘explosion’

The ultra-rich use these 5 real estate strategies to build wealth while they sleep — you can start with just $100

Millionaires under 43 are reshaping investing — just 25% of their portfolios are in stocks. Here’s where their money is going

This includes everyone from Rapper 2 Chainz and former Secretary of Education Betsy DeVos (3) to an unknown number of current and former SpaceX employees (4) — including 27-year-old mariner Maryellyn Musselman, who was tasked with cleaning up floating rocket junk from the company’s many launches.

During her tenure at the firm, Musselman took advantage of the option to convert a portion of her paycheck (in her case, 10%) into SpaceX equity, which she held onto rather than re-selling via secondary insider sales (4).

She remains tight-lipped about what her stake, which also includes shares she received as part of her compensation, amounted to after two years with the company — or, what it might be worth come Friday.

She did confirm with The Wall Street Journal (4), however, that she hasn’t yet decided how quickly after the IPO she will release her holdings, the money from which she intends to use to open her own business, like others interviewed by the outlet earlier in June.

Read More: BlackRock warns buying and holding the S&P 500 isn’t enough for retirement anymore — here's why

Some experts purport that a $5,000 investment on Friday could realistically be worth (5) up to $8,745 in five years’ time. Others expect that, given the company’s speculative and arguably overvalued (6) nature, some early public investors could be in for “an expensive lesson” (7) down the line.

As one Reddit user (8) aptly wrote in a recent discussion about the IPO, “No one knows; SpaceX could rocket just from hype alone or its financial reality might hit it on day one.”

The IPO filing itself contained some revelatory financials, including for SpaceX’s AI arm, xAI, which reported operating losses of $6.4 billion last year. It only brought in $3.2 billion (9) in revenue — pretty standard for AI (10), though still cause for concern for those who worry about the sector’s potential future profitability and questionable returns (11) on billions in capital expenditures.

Among the aforementioned early investors are some of the big banks’ and funds’ most esteemed (read: wealthy) clients, who are already at the front of the line for shares. A whopping $500 million in fees (12) is anticipated to be on the table as a result of the transactions.

As noted by the WSJ, (4) and exemplified by Musselman, it’s not just desk workers who received SpaceX stock awards over the years, but also other salaried staff, ranging from baristas to welders. But, it will be the executives, such as SpaceX President Gwynne Shotwell and Board Member Antonio Gracias, who stand to gain the most, with billions in estimated share valuations (13).

One analyst who appeared on CNBC’s Squawk Box last week called the IPO (13) “one of the biggest liquidity events ever,” not only elevating Musk to the status of the world’s first trillionaire (14), but creating “several new billionaires and countless millionaires” as well. For reference, a 1% stake, at the $1.7+ trillion valuation the company is expected to hit after this round of financing, will be equivalent to $17 billion (15).

Dave Ramsey warns nearly 50% of Americans are making 1 big Social Security mistake — here’s how to fix it ASAP

Thanks to Jeff Bezos, you can now become a landlord for as little as $100 — and no, you don't have to deal with tenants or fix freezers. Here's how

Millions of US drivers renew their car insurance without shopping around. Your insurer loves that. This 2-minute check could save you 15% or more

‘Running out of money’: Kraft, McDonald’s, Whirlpool CEOs all issue same dire warning about US consumers — protect your wealth now

Join 250,000+ readers and get Moneywise’s best stories and exclusive interviews first — clear insights curated and delivered weekly. Subscribe now.

We rely only on vetted sources and credible third-party reporting. For details, see our ethics and guidelines.

U.S. Securities and Exchange Commission (1); Yahoo Finance (2); The New York Times (3), (12); The Wall Street Journal (4); The Motley Fool (5); Fortune (6); The Globe and Mail (7); Reddit (8), (10); TechCrunch (9), (15); CNBC (11); YouTube (13); CNN (14)

This article originally appeared on Moneywise.com under the title: A mariner put 10% of her paycheck into SpaceX for 2 years. As it goes public — she won't say what her shares are worth

This article provides information only and should not be construed as advice. It is provided without warranty of any kind.