SiPearl is a European fabless semiconductor company designing sovereign high-performance, energy-efficient CPUs for supercomputers, AI workloads and data centres. Founded in 2019 by Philippe Notton, SiPearl emerged from the European Processor Initiative (EPI) consortium and is developing the Rhea1 microprocessor (80 Arm Neoverse V1 cores, ~61 billion transistors), which taped out in June 2025 and will power Europe's first exascale supercomputer, Jupiter, at Forschungszentrum Julich. The company also unveiled Athena1, a security-focused processor for defence and aerospace, and is preparing the next-generation Rhea2 chip. SiPearl employs senior experts from Atos, STMicroelectronics, Marvell, Intel, Nokia and MediaTek, with offices in France (Maisons-Laffitte, Grenoble, Massy, Sophia Antipolis), Germany (Duisburg) and Spain (Barcelona).
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2019
Employees
130–200
Total Funding
$377.2M
2 rounds
Total raised $377.2M across 2 rounds
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Last updated 06-25-2026
Latest Round
Type
Series A (final close)
Date
July 8, 2025
Amount
EUR 32M (approx USD 37.5M) third tranche; closes EUR 130M Series A
Valuation
—
Lead Investors
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| July 8, 2025 | Series A (final close) | EUR 32M (approx USD 37.5M) third tranche; closes EUR 130M Series A | — | Cathay Venture, EIC Fund, French State (France 2030) |
| April 5, 2023 | Series A (first tranche) | EUR 90M (approx USD 99M) | — | Arm, European Innovation Council (EIC) Fund, French State (French Tech Souverainete) |
Philippe Notton
CEO & Founder
Competitor list is illustrative and may be incomplete, stale, or erroneous.
NVIDIA
Designs Grace Arm-based server CPUs (Grace-Hopper, Grace-Blackwell superchips) that compete with SiPearl Rhea1 for HPC and AI workloads, including in the Jupiter exascale system.
Intel
x86 Xeon CPUs remain the dominant HPC server processors and a primary competitor to SiPearl's Arm-based Rhea CPUs in supercomputing deployments.
AMD
EPYC server CPUs (and Instinct accelerators) compete directly with SiPearl in HPC and AI data center markets; AMD also partners with SiPearl on GPU support.
Ampere Computing
Designs Arm-based AmpereOne server CPUs targeting cloud and HPC workloads, a peer of SiPearl in the Arm server CPU segment.
Fujitsu
Develops Arm-based HPC CPUs (A64FX, Monaka with 144-150 cores) used in supercomputers such as Fugaku, directly comparable to SiPearl Rhea1 in the HPC Arm server CPU niche.
No. SiPearl is a private company and does not have a public stock ticker or trade on a public stock exchange. Its shares are generally held by founders, employees, investors, and other private shareholders. Buyers and sellers may be able to transact in SiPearl shares through private secondary transactions, but any transaction depends on share availability, buyer and seller agreement, transfer restrictions, company approval rights, and any applicable right of first refusal. There is no guarantee that SiPearl will complete an IPO or other liquidity event.
Yes, it is sometimes possible to buy SiPearl shares pre-IPO through private secondary transactions. This depends on finding a willing seller, company approval, and satisfying any transfer restrictions or rights of first refusal.
Buyers interested in buying SiPearl shares on the secondary market typically do so through SetterVC and other secondary-market platforms, subject to eligibility requirements, share availability, transfer restrictions, and issuer approval. Buyers may need to satisfy sophistication, accreditation, institutional, platform, regulatory, or other eligibility requirements before participating. Once eligible, buyers may be able to view listings, make bids, and work with a licensed broker through the transaction process. Buyers should ensure they have appropriate legal and financial advisors guiding them before completing any transaction.
SiPearl's latest disclosed funding round was a Series A (final close) round in July 8, 2025. The round raised approximately EUR 32M (approx USD 37.5M) third tranche; closes EUR 130M Series A, with Cathay Venture, EIC Fund and French State (France 2030) listed as disclosed lead or major investors. Primary funding rounds are different from secondary transactions: in a primary round, capital goes to the company, while in a secondary transaction, investors buy existing shares from current shareholders. Funding-round data reflects publicly reported or collected information and may be incomplete.
SiPearl has raised approximately $377.2M in disclosed funding across 2 rounds. These figures reflect primary capital raised by the company and do not include every possible secondary transaction, undisclosed round, debt facility, or private transfer. Reported funding totals can change as new rounds are announced or older round details are corrected. Eligible users can use SetterVC to track SiPearl's funding history alongside private-market activity where available.
SiPearl's disclosed investors include Cathay Venture, EIC Fund, French State (France 2030), Arm, European Innovation Council (EIC) Fund and French State (French Tech Souverainete). Investor lists are based on public reporting, company announcements, and collected funding-round data, and may be incomplete. Participation in a prior funding round does not mean those investors are currently buying or selling shares. On SetterVC, eligible users can review SiPearl's funding history, valuation history, and private-market activity alongside other venture-backed companies.
SiPearl's most-cited competitors include NVIDIA, Intel, AMD, Ampere Computing and Fujitsu. Investors often compare these companies by sector, product focus, valuation, funding raised, growth signals, investor base, and private-market activity.
Secondary-market demand for SiPearl shares can be affected by company performance, revenue growth, profitability, funding history, valuation, investor interest, sector momentum, public-market conditions, expected timing of a liquidity event, and the availability of shares for sale. Demand can also be affected by transfer restrictions, company approval rights, right of first refusal processes, limited information, and the price expectations of buyers and sellers. Strong demand does not guarantee strong pricing, liquidity, or investment returns. Weak demand does not necessarily reflect the company's long-term prospects. Demand signals should not be treated as a recommendation or prediction of investment performance. Buyers and sellers should treat demand signals as informational and conduct their own diligence before transacting.
Sellers often rely on intermediaries and platforms, such as SetterVC and other secondary-market platforms, to identify potential buyers. The exact process varies by company and transaction, but sellers often begin by confirming their ownership, desired price, transferability, and any company approval or notice requirements. If the seller agrees with a buyer on acceptable price and terms, the company may need to be notified through a share transfer notice or similar process. If a right of first refusal, company approval right, or other transfer restriction applies, the seller may need to wait until that process is completed. The parties may then execute a purchase and sale agreement, complete required transfer documentation, and close if all required conditions are satisfied. Sellers should always seek proper legal and financial advice before completing the transaction.
Yes, current and former SiPearl employees, early investors, and other existing shareholders may be able to sell vested shares before an IPO through a private secondary sale. This is not automatic; it depends on whether the shareholder has transferable shares, whether there is buyer demand, and whether the company's governing documents permit the transfer. Many companies require prior notice, company approval, or a right of first refusal before shares can be sold. Sellers should also seek proper legal and financial advice before proceeding.
A SiPearl secondary transaction usually involves an existing shareholder selling shares to a buyer before a public listing. The buyer and seller typically agree on price, number of shares, share class, and closing conditions. The seller may then need to notify SiPearl through a share transfer notice or similar process. If SiPearl or existing investors have approval rights, transfer restrictions, or a right of first refusal, those steps may need to be completed before the transfer can close. The parties typically enter into a purchase and sale agreement, complete any required transfer documentation, and close only if the necessary conditions are satisfied. Timing and certainty can vary by company and transaction.
In most private secondary transactions, parties commonly use a purchase and sale agreement that outlines price, terms, and conditions. They may also use share transfer documentation, often a stock transfer notice, share transfer notice, transfer instruction, or similar document, along with any required company approval or right of first refusal materials. Proof of ownership, such as a cap table entry, share certificate, brokerage statement, issuer confirmation, or administrator confirmation, may also be important. Buyers often request recent company financials, but private companies may limit disclosure. Since every deal varies, buyers and sellers should consult legal and financial advisors to understand which documents are needed.
Buying SiPearl shares pre-IPO is risky. Shares are illiquid, no IPO or liquidity event is guaranteed, valuations can change, transfers may require company approval, and private companies may provide limited financial disclosure. Be prepared for total loss. SetterVC and Setter Capital do not provide due diligence, legal, tax, accounting, valuation, or investment advice. Buyers must conduct their own due diligence, verify information, and seek independent legal and investment advice before proceeding.
Private secondary shares are typically illiquid. Unlike public stocks, there is no active public market, so selling them can be difficult and time-consuming. Sales depend on finding a willing buyer and often require company approval. Investors should be prepared to hold the shares for an extended period, with no guarantee of a future sale. Always assess your need for liquidity before investing.
SetterVC and Setter Capital do not provide due diligence, legal, tax, accounting, valuation, or investment advice. Buyers must conduct their own due diligence, including verifying ownership, transferability, legal structure, company approval, and assessing the company's prospects. SetterVC and Setter Capital do not provide advice on whether an investment is good, what price to pay, or what the best bid or ask is. SetterVC and Setter Capital may share documents in some circumstances, but it does not guarantee their accuracy or completeness. Due diligence is essential. Seek legal and investment advice as needed.
Before buying SiPearl shares, a buyer should try to review the share class, price per share, implied valuation, transfer restrictions, ROFR process, company approval rights, seller ownership evidence, recent financing or tender-offer information, available financial information, information rights, resale restrictions, tax considerations, and expected liquidity paths. Not all information may be available for a private company. Buyers should confirm available diligence, process details, and information needs with their own legal, tax, and investment advisers.
SPVs carry risks. Examples include the need to confirm the company allows SPV-based transfers, verify that the SPV truly owns the shares or interests it claims to own, and ensure it has not sold more interests than it holds. Due diligence is essential. Seek legal and investment advice as needed.
Forward contracts carry risks. Examples include the seller refusing to transfer the shares at the future date, even if the seller owns them, the seller going bankrupt with creditors claiming the shares, or the seller committing the same shares to multiple parties. Due diligence is essential. Seek legal and investment advice as needed.
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