Welcome to our dedicated page for Mirion Technologies SEC filings (Ticker: MIR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This page provides access to U.S. Securities and Exchange Commission (SEC) filings for Mirion Technologies, Inc. (NYSE: MIR), a global provider of radiation detection, measurement, analysis, and monitoring solutions to nuclear, medical, defense, and research end markets. These filings offer detailed information on Mirion’s capital structure, financing arrangements, acquisitions, and periodic financial reporting.
Investors can review current reports on Form 8-K that Mirion files to disclose material events. In 2025, the company filed multiple 8-Ks describing an Equity Purchase Agreement to acquire, and later the completion of the acquisition of, the indirect parent of Paragon Energy Solutions. Other 8-Ks outline an underwriting agreement for a public offering of Class A common stock, the completion and terms of a private offering of Convertible Senior Notes due 2031, and amendments to the company’s credit agreement that establish a new tranche of term loans maturing in 2032 to refinance existing term loans.
Mirion also files 8-Ks to furnish quarterly earnings press releases, such as those announcing financial results for quarters ended June 30 and September 30, 2025. While these furnished materials are not deemed filed for certain liability purposes, they give context on revenue trends, profitability metrics, and guidance updates that complement the company’s periodic reports on Forms 10-K and 10-Q.
Through this filings page, users can follow Mirion’s use of equity and convertible debt financing, its acquisition-related disclosures, and its credit agreement refinancings. Stock Titan’s tools can help surface key points from lengthy documents, such as the main terms of convertible notes, conditions in acquisition agreements, or significant covenants and events of default in indentures and credit facilities. This makes it easier to understand how Mirion structures its obligations and reports material developments affecting MIR shareholders.
Mirion Technologies Chief Human Resources Officer Alison Ulrich had 2,053 shares of Class A common stock withheld on April 1, 2026 to cover tax obligations from vesting restricted stock units. The shares were valued at $18.59 each. After this non-discretionary tax-withholding transaction, she directly holds 36,235 shares of Mirion common stock.
Mirion Technologies, Inc. Chief Financial Officer Brian Schopfer reported a routine tax-related share withholding. On April 1, 2026, 7,377 shares of Class A Common Stock were withheld at $18.59 per share to satisfy tax obligations tied to vesting restricted stock units.
The company’s policy mandated this withholding, and it was not a discretionary trade by Schopfer. After this transaction, he directly holds 913,290 Class A shares and 399,935 Class B shares, indicating the disposition was small relative to his overall stake.
Mirion Technologies, Inc. Chief Accounting Officer Christopher A. Moore reported a routine share disposition tied to equity compensation. On April 1, 2026, 1,903 shares of Class A common stock were withheld at $18.59 per share to satisfy tax withholding obligations from vesting restricted stock units.
The company’s policy required this withholding, so it was not a discretionary market trade. After this tax-related disposition, Moore directly held 30,557 shares of Mirion Technologies Class A common stock.
Mirion Technologies, Inc. Chief Executive Officer Thomas D. Logan reported a tax-related share withholding tied to vesting equity awards. On the vesting of previously granted restricted stock units, 22,614 shares of Class A Common Stock were withheld at $18.59 per share to satisfy tax withholding obligations under a pre-adopted company policy. This withholding is described as mandated by the issuer and not a discretionary trade by Logan.
After this event, Logan holds 364,060 shares of Class A Common Stock directly, 1,544,017 shares of Class B Common Stock directly, and 3,205,378 shares of Class A Common Stock indirectly through the Logan Family Trust.
Mirion Technologies Chief Legal Officer Emmanuelle Lee reported a mandatory tax-related share withholding tied to equity compensation. On Class A Common Stock, 4,680 shares were withheld at $18.59 per share to satisfy tax obligations from vesting restricted stock units under a pre-adopted company policy, rather than an open-market sale. After this event, Lee directly owned 82,431 Class A shares. The filing also shows holdings of Class B Common Stock, including 138,193 shares held directly and 32,748 shares held indirectly through a trust.
Kingsley Lawrence D reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Lawrence D. Kingsley received a stock grant of 1,104 Class A Common shares, taken in lieu of cash fees for board service. The shares were issued at a reference price of $17.32 per share as a vested award for his quarterly director retainer.
After this grant, Kingsley directly holds 64,047 Mirion Class A shares. He also has an additional 3,509,075 shares reported as indirectly owned through the Lawrence D. Kingsley Revocable Trust. This filing reflects routine, compensation-related share issuance rather than an open-market purchase.
Mirion Technologies will hold its 2026 virtual annual stockholders’ meeting on May 13, 2026, asking investors to elect eight directors, ratify Deloitte & Touche as auditor, and approve executive pay on an advisory basis.
Management highlights strong 2025 momentum, including record $1+ billion in orders, a 26% increase over 2024, and double-digit organic revenue growth in Nuclear Power and Nuclear Medicine. Acquisitions of Certrec and Paragon Energy Solutions lifted pro-forma commercial nuclear power revenue to about 47% of Mirion revenue, up from 37%, deepening exposure to nuclear power markets.
The company emphasizes a governance framework built around an eight‑member, largely independent board, a Lead Independent Director, formal committee charters, and policies on ethics, human capital, cybersecurity, and corporate responsibility. Stockholders of record as of March 16, 2026 can vote online, by phone, by mail, or during the live webcast.
The Vanguard Group amended its Schedule 13G/A filing for Mirion Technologies Inc and reports 0 shares beneficially owned, representing 0% of the class as disclosed. The filing explains an internal realignment effective January 12, 2026 that disaggregated certain subsidiaries' holdings.