Mirion Technologies, Inc.MIR
Cash in trust
$750M
$750,101,238
Trust per share
$10.00
Redemption value
IPO
Jul 2020
$750M raised
Combination deadline
—
Not disclosed
Filings on record
534
Latest Oct 28, 2026
Business combination
- Target
- Not disclosed in an indexed filing
- Announced
- Jun 17, 2021
- Closed
- Oct 25, 2021
Overview
Mirion Technologies, Inc. is a special purpose acquisition company incorporated and registered with the SEC under CIK 0001809987. It completed its initial public offering in Jul 2020, raising $750M in gross proceeds and listing on NYSE. Class A shares trade under the ticker MIR on NYSE. The vehicle is sponsored by Mirion Technologies through GS Sponsor II LLC. Business combination closed; the company trades under a new ticker.
“Our strategy is to identify and complete our initial business combination with certain industry and business characteristics.”
Reading the filings
Arithmetic on what Mirion Technologies, Inc. has disclosed, written the way a desk would read it. These are observations, not a rating. Nothing here scores the vehicle or implies a view on it.
Trust versus the $10 unit
The trust holds $10.00 per public share, effectively the $10.00 the units were sold at, so little or no interest has accrued to the account yet.
Warrant coverage
Each unit carried one-quarter warrant per unit. Warrants are dilution deferred: they cost the holder nothing until exercised, and they overhang the post-combination share count. Thinner coverage is generally a sign of a stronger book at pricing.
Underwriting
Goldman Sachs led the offering. It has been named on 97 SPAC IPOs, book-running 59 of them, and 58.3% of its resolved vehicles closed a deal. The syndicate has no control over whether a sponsor finds a target, but the quality of the book at pricing shapes who ends up holding the units.
Filings per month since the first one. A vehicle that has gone quiet with a deadline ahead is a different proposition from one that is still working.
534 filings in all. 6 in the last three months, against a busiest month of 33.
News on Mirion Technologies, Inc.
Last 90 days- B. Riley Securities Reiterates Buy on Mirion Technologies, Lowers Price Target to $25Neutral
Benzinga · 2d ago
- Why are Mirion (MIR) shares soaring todayNeutral
Yahoo · 3d ago
- Neutral
- Mirion (MIR) Q3 2026 Earnings Call TranscriptNeutral
Yahoo · 3d ago
- Mirion Technologies, Inc. (MIR) Q3 2026 Earnings Call TranscriptNeutral
SeekingAlpha · 3d ago
- Mirion Technologies, Inc. 2026 Q3 - Results - Earnings Call PresentationNeutral
SeekingAlpha · 3d ago
- Mirion Technologies, Inc. Q3 2026 Earnings Call SummaryNeutral
Yahoo · 3d ago
- Neutral
- Neutral
- Mirion Technologies (NYSE:MIR) Q3 In Line as Nuclear Orders Climb but Mixed Guidance WeighsNeutral
ChartMill · 4d ago
- Neutral
- Mirion (NYSE:MIR) beats Q3 2026 sales expectationsNeutral
Yahoo · 4d ago
News sentiment
NeutralAcross 12 recent stories, weighted towards the newest. Scored by our own headline classifier using finance- and SPAC-specific terms. It reads what a story is about, not what the shares are worth.
SEC filing history
Free tier: filings older than 24 hours- 10-Q
Quarterly report
Accession 0001628280-26-067882
- 8-K
Current report
Items 2.02, 9.01 · Accession 0001628280-26-067591
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-063985
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-063983
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-060095
- 8-K
Other events
Items 8.01, 9.01 · Accession 0001628280-26-059593
- 10-Q
Quarterly report
Accession 0001628280-26-050604
- 8-K
Current report
Items 2.02, 9.01 · Accession 0001628280-26-050171
- 8-K
Current report
Items 5.02, 9.01 · Accession 0001628280-26-046912
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-046239
- SD
SD
Accession 0001628280-26-039149
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035097
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035096
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035094
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035092
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035090
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035088
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-035086
- 8-K
Submission of matters to a vote of security holders
Items 5.07, 9.01 · Accession 0001628280-26-035077
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-032863
- 144
144 filing
Accession 0001950047-26-004217
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-032198
- SCHEDULE 13G
Beneficial ownership report (passive)
Accession 0002100119-26-000786
- 10-Q
Quarterly report
Accession 0001628280-26-028363
- SCHEDULE 13G
Beneficial ownership report (passive)
Accession 0002100121-26-000502
- 8-K
Current report
Items 2.02, 9.01 · Accession 0001628280-26-027943
- 8-K
Current report
Items 5.02, 9.01 · Accession 0001628280-26-024837
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-023183
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-023177
- 4
Statement of changes in beneficial ownership
Accession 0001628280-26-023173
Pro
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Mirion Technologies, Inc.: questions answered
What is Mirion Technologies, Inc. (MIR)?
Mirion Technologies, Inc. is a special purpose acquisition company incorporated and registered with the SEC under CIK 0001809987. It completed its initial public offering in Jul 2020, raising $750M in gross proceeds and listing on NYSE. Class A shares trade under the ticker MIR on NYSE. The vehicle is sponsored by Mirion Technologies through GS Sponsor II LLC. Business combination closed; the company trades under a new ticker.
How much does Mirion Technologies, Inc. hold in trust?
Approximately $750,101,238, or about $10.00 per public share, as at the most recent filing on record. Trust balances move: shareholders redeem at extension votes and at the combination vote, and sponsors pay contributions in to extend. Treat the figure as a point-in-time disclosure, not a running balance.
When must Mirion Technologies, Inc. complete a merger?
No combination deadline appears in the filings we have indexed. The date is stated in the charter and repeated in each quarterly report; where our parser could not establish it with confidence we leave it blank rather than infer one.
What happens if Mirion Technologies, Inc. does not find a target in time?
The charter requires the vehicle to redeem 100% of the public shares and return the trust, pro rata, to public shareholders. That is the mechanism working as designed rather than a default. Founder shares and warrants are worthless in that outcome, which is why the sponsor's incentive is to get a deal done or to buy more time. Across the market, deadline lapsed without a deal; trust returned to public shareholders.
Can I redeem shares in Mirion Technologies, Inc., and at what price?
Public shareholders may elect to redeem in connection with a combination vote and at each extension vote, at the pro-rata trust value on the relevant record date, most recently disclosed at about $10.00 per share. Redemption is a right attached to the public shares only; warrants and rights carry no claim on the trust. The mechanics and the deadline for electing are set out in the proxy statement for the vote in question.
What tickers does Mirion Technologies, Inc. trade under?
Class A shares trade as MIR on NYSE. Units trade first and separate into their component securities roughly 52 days after the IPO; only the Class A shares carry the redemption right against the trust.
Is the trust value the same as the share price for Mirion Technologies, Inc.?
No, and the gap between them is the whole trade. Trust per share is a disclosed, contractual figure of $10.00, being what a redeeming holder receives. The market price is whatever the shares change hands at: most recently $18.37, a spread to the redemption value. Quotes on this site are delayed and indicative; confirm on your own venue before trading.
How much dilution do Mirion Technologies, Inc.'s founder shares and warrants create?
Each unit also carried one-quarter warrant per unit, which is dilution deferred until exercise. Both are disclosed in the prospectus and both survive into the combined company, which is why a de-SPAC at $10 is not economically the same as an IPO at $10.
Who sponsors Mirion Technologies, Inc., and what is their track record?
GS Sponsor II LLC is the sponsor entity, part of the Mirion Technologies franchise. This is the only vehicle we have attributed to that sponsor. Named principals: Tom Knott.
Which banks underwrote the Mirion Technologies, Inc. IPO?
Goldman Sachs, Citigroup. Goldman Sachs and Citigroup were credited as book-running managers on the cover. Syndicate membership and role are read from the prospectus cover and the underwriting section.
Is Mirion Technologies, Inc. tradeable, and where?
Yes. MIR returned a live quote of $18.37 on NYSE. Quotes here are delayed and refreshed on a schedule rather than streamed, so treat the figure as indicative and confirm on your own venue. Units and warrants trade under their own symbols and are quoted separately.
Is Mirion Technologies, Inc. a good investment?
That is not a question this site answers. Mirion Technologies, Inc. is covered here as reference data: what the company filed, when it filed it, and what the numbers in those filings say. The Edge, FOMO and Potential scores on this page are derived measures with a published formula, not ratings of investment merit: they describe the setup, and every component is shown so you can take them apart. We publish no price targets and no recommendations, and nothing here should be read as advice. The figures are a starting point for your own work, and each one carries the accession number of the filing it came from.
Where does this Mirion Technologies, Inc. data come from?
Filings Mirion Technologies, Inc. submitted to the SEC under CIK 0001809987: the registration statement and final prospectus for the structure, quarterly and annual reports for the trust, current reports and proxy statements for deals, votes and extensions. Trust economics are taken from the registrant's own XBRL tags rather than parsed from prose, which is why they are exact. Every filing in the history above is listed with its accession number, which identifies the document uniquely on EDGAR; Pro accounts open it directly from the row.
Compiled by the SPACListing research desk
Last reconciled Nov 1, 2026
Every figure on this page is read from documents the registrants filed with the U.S. Securities and Exchange Commission, principally the IPO prospectus (Form 424B4), quarterly and annual reports, current reports and proxy statements, the registrant's own XBRL tags for trust economics. Nothing is sourced from press coverage, from the companies themselves, or from a third-party aggregator. Where a filing does not disclose something, the field is left blank rather than estimated.
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Continue reading
The context around this vehicle: who else the sponsor has launched, which banks priced it, and where it sits in the wider market.
Mirion Technologies: the full record
Every vehicle this sponsor has launched, what closed, what liquidated and what is still live.
Goldman Sachs in SPACs
Mandates, bookrun credit, deal volume and the outcome of the vehicles it priced.
All completed de-spac transactions
Business combination closed; the company trades under a new ticker.
Deadline calendar
Which sponsors are running out of time, and when the extension votes land.
What is a SPAC?
The structure, the economics and where the risks actually sit.
SPAC glossary
Every term in a blank-check filing, defined the way practitioners use it.
How this data is built
Coverage universe, ingestion, normalisation, lifecycle classification and known limits.