As of September 26, 2026, Altera has confidentially filed for a US initial public offering. No public S-1 or F-1 exists yet, and SEC EDGAR only shows filings once they become public, so a confidential filing does not appear there. Reuters reported on September 15, 2026, a Tuesday, that the FPGA and programmable chip maker, which Intel spun out, had confidentially filed for a US IPO; Bloomberg corroborated the report the same day. Five days earlier, on September 10, 2026, Reuters had reported, citing people familiar with the matter, that Altera, backed by Silver Lake and Intel, was preparing an IPO that could raise more than $2 billion, naming Barclays, Citigroup, JPMorgan and Morgan Stanley as underwriters, with a listing possibly coming as soon as late 2026. Silver Lake owns 51% of Altera and Intel holds the remaining 49%, a stake it kept after a 2025 deal that valued the company at $8.75 billion. None of this comes from Altera itself. A confidential filing lets a company start SEC review privately, without disclosing terms, size or a date, and it does not guarantee the IPO happens on any particular timeline. Track SEC EDGAR and Altera's own announcements directly, not secondary reports of a date.
Segmara is an independent research site. Segmara does not sell, broker, or arrange share purchases. Nothing here is investment advice.
Key points
A confidential filing, not a public one
Reuters reported on September 15, 2026, a Tuesday, that Altera had confidentially filed for a US initial public offering. Bloomberg corroborated the report the same day. A confidential filing lets a company submit a draft registration statement to the SEC without making it public, so it does not appear on SEC EDGAR, which only shows filings once they become public, and it commits the company to nothing about timing, size or terms.
The filing follows an earlier report. Reuters said on September 10, 2026, citing people familiar with the matter, that Altera was preparing an IPO, five days before the confidential filing itself was reported. Neither report is a statement from Altera; both are reporting from Reuters and Bloomberg, not company disclosures.
The raise, the underwriters and the timing
Reuters reported on September 10, 2026 that the IPO could raise more than $2 billion, and named Barclays, Citigroup, JPMorgan and Morgan Stanley as the underwriters expected to lead the offering. The same report pointed to a listing possibly coming as soon as late 2026.
Those figures describe what people familiar with the process were reportedly discussing before the confidential filing became public knowledge. A confidential filing does not lock in a raise amount, an underwriter roster or a listing date, any of which can still change before Altera files publicly or prices its shares.
Who owns Altera
Altera is an FPGA and programmable chip maker that Intel spun out. Silver Lake owns 51% of the company and Intel kept the remaining 49%, a split that dates to a 2025 deal valuing Altera at $8.75 billion.
That $8.75 billion valuation is the most recent confirmed figure for what Altera is worth as a whole company. It is separate from the more than $2 billion Reuters reported the IPO itself could raise, since a company valuation and an IPO raise measure different things: one prices all of Altera, the other prices only the shares sold in the offering.
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Article title
When Will Altera IPO? It Confidentially Filed for a US Listing
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Searches like 'When Will Altera IPO? It Confidentially Filed for a US Listing' are research questions: what a filing or a company statement confirms, what has only been reported, and what is still unknown.
What counts as a listing step
For an IPO, the primary record is a registration statement filed with the securities regulator of the listing market, such as an S-1 or F-1 on SEC EDGAR for a US listing. Funding rounds, valuations and secondary-market prices are context, not listing steps.
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Segmara is an independent research site. It does not sell, broker, or arrange share purchases, and nothing on this page is investment advice.
How a company reaches a US listing
The SEC filing trail
DraftThe company can first submit a draft registration statement (DRS) for confidential SEC review.
S-1 or F-1The registration statement goes public on SEC EDGAR: Form S-1, or Form F-1 for many foreign companies. A company that used a draft must file publicly at least 15 days before its roadshow.
AmendmentsS-1/A or F-1/A amendments answer SEC comments, and one of them adds the expected price range.
PricingOnce the SEC declares the registration effective, the company sets the price with its underwriters and files the final prospectus, usually a 424B4.
First tradeThe shares start trading on the exchange named in the prospectus, such as Nasdaq or the NYSE.
Segmara Pro checks SEC EDGAR for Altera filings every weekday and posts an alert in the members forum when one of these public filings appears. You can also check yourself with EDGAR full-text search.
No S-1 or F-1 for Altera appears on SEC EDGAR, which only shows public filings. Reuters reported on September 15, 2026 that Altera confidentially filed for a US IPO, a report Bloomberg corroborated the same day, five days after Reuters first reported the company was preparing to file.
Reuters reported on September 10, 2026 that the IPO could raise more than $2 billion, with Barclays, Citigroup, JPMorgan and Morgan Stanley acting as underwriters and a listing possibly coming as soon as late 2026.
Altera is majority owned by Silver Lake, which holds 51%, with Intel keeping the other 49% after a 2025 deal that valued the FPGA and programmable chip maker, spun out of Intel, at $8.75 billion.
Risk notes
Rumor risk: unofficial dates, valuations, or funding details circulating on social media or forums are frequently wrong or outdated and should not be treated as confirmation of anything.
Illiquidity risk: any private-market interest, indicative marks, or pre-IPO share arrangements in a company that has not listed can be difficult to exit and may not reflect a tradable price.
Timing risk: a company can pause, restart, or abandon IPO preparation at any stage, including after a confidential or public filing, so no step before pricing guarantees a listing.
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Has Altera confirmed an IPO date?
No. Altera has confidentially filed for a US IPO, which Reuters reported on September 15, 2026 and Bloomberg corroborated the same day, but a confidential filing has no public prospectus and no listing date. No S-1 or F-1 has appeared on SEC EDGAR, and neither Altera nor its reported underwriters have stated a specific date.
What is Altera worth?
The most recent confirmed figure comes from the 2025 deal that split ownership between Silver Lake, which holds 51%, and Intel, which kept 49%; that deal valued Altera at $8.75 billion. Reuters separately reported on September 10, 2026 that the IPO itself could raise more than $2 billion, a different figure from the company's overall valuation.
Who is underwriting Altera's IPO?
Reuters reported on September 10, 2026 that Barclays, Citigroup, JPMorgan and Morgan Stanley were expected to underwrite the offering, five days before Altera's confidential filing itself was reported on September 15, 2026.
Can I buy Altera shares before the IPO?
Not through a public exchange. Altera is privately held, and Segmara does not sell, broker or arrange purchases of Altera shares. Check SEC EDGAR and Altera's own statements directly for verified filing status.
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Segmara is an independent research site. Segmara does not sell, broker, or arrange share purchases.