Private company · employee equity guide
What is Rondo Energy stock worth?
We're hiring! Rondo is delivering the world's lowest cost zero-carbon industrial heat and power. The Rondo Heat Battery powers industrial processes with renewable electricity, cutting energy costs and eliminating emissions. We deliver complete solutions to large-scale industrial energy needs worldwide - both as major capital projects and on a Heat as a Service basis. The Rondo Heat Battery provides temperatures up to 1,500°C, at less than half the cost and twice the efficiency of hydrogen.
Estimated share price
Rondo Energy has an observed estimated price: most recent data 2026-09-15, daily history back to 2025-08-13.
Estimated from live trades and accepted bids across employer liquidity programs, institutional trades, broker trades, and pre-IPO marketplaces. Private shares are illiquid and transfer-restricted; estimates are educational, not an offer or advice. The preview above is blurred and illustrative. How this is calculated
About Rondo Energy
- Employees
- 161
- Founded
- 2020
- Industry
- Energy Technology
- Website
- rondo.com
Weighing a Rondo Energy offer?
Upload the offer letter to see what the equity is approximately worth at today's estimated price. No account needed.
X-ray an offerLeaving Rondo Energy? Mind the window.
If you hold options, leaving usually starts a post-termination exercise clock, often 90 days. Miss it and vested options can expire worthless; exercise blindly and you may owe real money (including possible AMT) on shares you can't yet sell. Neither panic nor autopilot is a plan. Knowing your window, your exercise cost, and the current estimated price is.
Rondo Energy news timeline
- New 100 MWh industrial battery uses bricks to store heat, supplies steam2026-01-20interestingengineering.com
- Southeast Asia's First Industrial Heat Battery Now Operating in Thailand, Built by Rondo Energy and SCG2025-11-14prnewswire.co.uk
- Your next Heineken beer may be brewed with steam from a 100MWh heat battery2025-11-06engadget.com
- World’s biggest 100 MWh battery to brew zero2025-11-06interestingengineering.com
- Portugal’s EDP, Rondo sign PPA for solar-powered industrial heat project2025-11-04pv-magazine.com
- Rondo Energy to deploy 100 MWh heat battery for HEINEKEN, powered by solar from EDP2025-11-03prnewswire.co.uk
- Rondo Energy and EDP Partner for Zero-Carbon Brewing in Portugal2025-11-03oilprice.com
- Rondo Energy’s 100 MWh heat battery powered by 20 MW of onsite solar2025-10-21pv-magazine.com
- 'World's largest' industrial heat battery runs purely on solar energy2025-10-17interestingengineering.com
- The world’s largest battery made of bricks turns on in California2025-10-16mercurynews.com
- World's largest brick-based battery powers up at California oil field2025-10-16latimes.com
Rondo Energy equity, answered plainly
Is Rondo Energy a public company?
No. Rondo Energy is privately held, which is exactly why its share price doesn't show up in your brokerage app. The company (founded in 2020, operating in energy technology, with roughly 161 employees) remains private even at that scale. Its shares still change hands between eligible buyers and sellers on the secondary market, producing an observable estimated price.
What is Rondo Energy's stock price?
Rondo Energy has an observed estimated share price from secondary-market activity, updated as new data is observed. Its observed price history runs back to 2025-08-13. ExitCue members see the current estimate and its full history free, along with what their own grants are approximately worth at that price.
Can you sell Rondo Energy stock before an IPO?
Sometimes. Private-share sales depend on Rondo Energy's transfer restrictions, rights of first refusal, and whether the company runs tender offers or permits secondary sales. Your grant documents and the company's policies govern, but "hard to sell today" is not the same as "worth zero."
What happens to my Rondo Energy options if I leave?
Most option grants have a post-termination exercise window, commonly 90 days, sometimes longer, after which unexercised options expire worthless. The exact terms are in your grant documents. ExitCue reads those documents, tracks the deadline, and reminds you before the window closes.
How much is my Rondo Energy equity worth?
Multiply what you hold by the estimated share price, separating vested from unvested, and netting out strike prices for options. That's precisely the arithmetic ExitCue does for you, continuously, at the current observed estimate. It's an educational estimate, not a guarantee, and a far better anchor than the $0 the internet suggests.
What's the difference between Rondo Energy's 409A valuation and what its shares trade at?
The 409A is a tax-compliance appraisal, usually conservative, used to set option strike prices. Secondary-market pricing reflects what buyers and sellers actually agree to. The two frequently differ, which is why evaluating an offer on the 409A alone undersells (or oversells) it.
When will Rondo Energy IPO?
Unless Rondo Energy has publicly announced a listing, nobody knows, including the people who sound confident on forums. The practical upside of secondary markets is that you don't have to wait for an IPO to know approximately what the shares trade at.
Do my unvested Rondo Energy RSUs count for anything?
Unvested equity isn't yours yet, but it has an estimable value and a schedule. Seeing vested and unvested value separately, in dollars at the current estimated price, turns "some RSUs" into a number you can plan around.
General educational information, not advice about your specific situation. Grant terms vary; your documents govern.
Work out what your Rondo Energy equity is worth
These calculators take your own numbers and need no account.
- Option exercise costShares times strike: what exercising would cost, plus the estimated spread from your own value estimate.
- Vesting scheduleYour upcoming vest dates and cumulative vested shares from your start date, cliff, length, and frequency.
- Private stock scenarioEstimated value of your equity at low, mid, and high per-share scenarios you choose yourself.
New to this? Learn explains grant types, vesting and cliffs, and where an estimated share price comes from — in plain language.
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