Every Form 4 that Mistras (MG) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow MG and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MG filings page.
Mistras Group, Inc. (MG) reported that President and CEO Natalia Shuman-Fabbri had 2,410 shares of Common Stock withheld on September 8, 2026 to pay tax liability arising from the vesting of restricted stock units. After this tax-withholding disposition, she directly holds 123,780 shares of Mistras Group common stock.
Mistras Group, Inc. ten percent owner-related trust reported an internal share transfer, not a market trade. A Grantor Retained Annuity Trust associated with reporting person Stephanie Athena Foglia made a bona fide gift of 411,875 shares of common stock as an ordinary-course annuity payment pursuant to the trust’s terms.
After this transfer, the GRAT continued to hold 4,310,811 common shares indirectly for the reporting person, who as trustee has sole voting and disposition power but disclaims beneficial ownership except for her pecuniary interest. Additional indirect family holdings include shares held by a spouse and children, alongside 1,393,324 shares held directly.
Mistras Group, Inc. major shareholder Aspasia F. Vahaviolos reported a bona fide gift of 411,875 shares of common stock on June 10, 2026. The transfer reflects an ordinary-course annuity payment from the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust to her. Following this non-cash transaction, she directly holds 1,794,839 shares of Mistras Group common stock.
Mistras Group, Inc. major shareholder Aspasia Felice Vahaviolos reported a bona fide gift of 528,672 shares of Common Stock at a stated price of $0.00 per share. After this transaction, she directly holds 1,382,964 Mistras Group shares. The footnote describes the transfer as an ordinary-course annuity payment from a 2025 Irrevocable Two-Year Grantor Retained Annuity Trust established by her.
Mistras Group, Inc. ten percent owner Stephanie Athena Foglia reported a bona fide gift and small open-market sales involving indirect holdings of the company’s common stock.
A Grantor Retained Annuity Trust linked to her made a 528,672-share annuity-related gift, while a spouse account sold a total of 4,000 shares at prices between $13.60 and $18.00 per share, leaving indirect and direct holdings still in the seven-figure share range.
DEBENEDICTIS NICHOLAS reported acquisition or exercise transactions in this Form 4 filing.
Mistras Group, Inc. director Nicholas DeBenedictis received a stock award as part of his director fees. He was granted 6,862 shares of common stock at no cash cost, increasing his direct holdings to 248,820 shares. The filing also reports 25,000 shares held indirectly through his spouse.
Mistras Group, Inc. director Richard H. Glanton received an award of 6,862 shares of Common Stock on May 19, 2026 as payment for director fees. The shares were granted at $0.00 per share as equity compensation rather than an open-market purchase, bringing his direct holdings to 68,431 shares. This is a single, routine stock grant classified as a grant, award, or other acquisition.
Mistras Group, Inc. director James J. Forese reported a stock award under a Form 4. On the transaction date, he received 6,862 shares of Common Stock as an award of stock for director fees at a reported price of $0.00 per share.
Following this grant, Forese directly owns 177,043 shares of Mistras Group common stock, according to the filing. The transaction is classified as a grant, award, or other acquisition rather than an open-market purchase or sale.
Lohmeier Michelle reported acquisition or exercise transactions in this Form 4 filing.
Mistras Group, Inc. director Michelle Lohmeier received an award of 6,862 shares of common stock as compensation for director fees on May 19, 2026. The shares were granted at no cash cost to her, reflecting a stock-based fee arrangement rather than an open-market purchase. After this grant, she directly holds 99,223 shares of Mistras Group common stock.
PIZZI CHARLES P reported acquisition or exercise transactions in this Form 4 filing.
Mistras Group, Inc. director Charles P. Pizzi received an award of 6,862 shares of Common Stock as compensation for director fees. The shares were granted at a price of $0.00 per share, reflecting a non-cash equity award. After this grant, Pizzi directly holds 73,480 shares of Mistras Group common stock.
Mistras Group, Inc. executive vice president and chief operating officer Hammad Hanei Wail reported a tax-related share disposition. On the transaction date, 2,865 shares of common stock were withheld to pay taxes upon vesting of restricted stock units, rather than sold in the open market. Following this withholding, he directly holds 61,777 shares of Mistras Group common stock.
Mistras Group, Inc. senior executive Edward J. Prajzner reported a routine tax-related share disposition. On the reported date, 1,367 shares of common stock were withheld at a price of $14.05 per share to cover taxes due upon the vesting of restricted stock units. Following this tax-withholding transaction, he directly holds 148,076 shares of Mistras Group common stock.
Mistras Group, Inc. senior executive vice president and CFO Edward J. Prajzner reported a routine tax-related share disposition. On the reported date, 2,239 shares of common stock were withheld to cover taxes upon the vesting of restricted stock units, rather than being sold on the open market. After this withholding, he directly holds 149,443 shares of Mistras Group common stock, indicating he retains a substantial equity position in the company.
Mistras Group Executive Chairman Manuel N. Stamatakis reported a tax-related share disposition. On March 4, 2026, he disposed of 814 shares of Mistras Group common stock at $15.68 per share through a tax-withholding transaction, not an open-market sale. After this filing, he directly holds 509,795 shares.
Mistras Group, Inc. executive Hammad Hanei Wail, EVP & Chief Operating Officer, reported a small tax-related share disposition. On the vesting of restricted stock units, 337 shares of common stock were withheld at $15.68 per share to cover taxes. Following this routine withholding, he holds 64,642 common shares directly.
Mistras Group, Inc. Sr. EVP and CFO Edward Prajzner reported two tax-withholding dispositions of common stock tied to vesting equity awards. On March 7, 2026, 2,540 shares were withheld at $14.82 per share. On March 4, 2026, 698 shares were withheld at $15.68 per share. Footnotes state these transactions represent shares withheld to pay taxes upon vesting of restricted stock units and performance-based restricted stock units, rather than open-market sales. Following these transactions, Prajzner directly owned 151,682 common shares.
Mistras Group EVP and Chief Commercial Officer Gennaro A. D'Alterio reported a small tax-related share disposition. He disposed of 184 shares of Mistras Group common stock at $15.68 per share to cover taxes upon vesting of restricted stock units, and now directly holds 47,239 common shares.
Mistras Group, Inc. executive Hammad Hanei Wail, EVP & Chief Operating Officer, reported updated insider activity. On February 25, 2026, he acquired 29,762 shares of common stock at $0.00 per share as a restricted stock unit (RSU) award for a performance grant. According to the footnote, these RSUs vest on December 31 in 2026, 2027, 2028 and 2029. After this award, his directly owned stake was 88,357 common shares.
The amended filing also restates a prior transaction from March 25, 2025, when 6,384 shares were disposed of at $10.79 per share to satisfy tax obligations through a tax-withholding disposition, not an open-market sale. Following that earlier transaction, he directly held 58,595 shares.
Mistras Group, Inc. reported that President and CEO Natalia Shuman-Fabbri acquired a grant of 101,190 shares of Common Stock on February 25, 2026. The shares were awarded at a stated price of $0.00 per share, bringing her direct holdings to 126,190 shares after the transaction.
Mistras Group, Inc. Executive Chairman Manuel N. Stamatakis reported an acquisition of common stock through an equity award. On the reported date, he received 86,310 shares of Mistras Group common stock at a stated price of $0.00 per share, described as a grant or award rather than an open-market purchase. Following this transaction, his directly held common stock ownership increased to 510,609 shares.
Mistras Group Sr. EVP and CFO Edward J. Prajzner reported offsetting equity transactions in company stock. On February 25, 2026, he acquired 37,202 shares of common stock as a grant or award at $0.00 per share, increasing his direct holdings.
On February 28, 2026, he disposed of 1,303 shares of common stock at a price of $15.28 per share in a tax-withholding disposition, used to satisfy tax obligations on equity compensation. After these transactions, he directly held 154,920 common shares.
Mistras Group EVP & Chief Operating Officer Hammad Hanei Wail reported mixed equity transactions in company stock. On February 25, 2026, he acquired 29,762 shares of common stock at a price of $0.0000 per share as a grant or award. A footnote explains this represents restricted stock units earned from a performance award that will vest on December 31 in 2026, 2027, 2028 and 2029. Following this grant, his directly owned stake increased to 88,357 shares. The filing also reports a prior disposition to the issuer on March 25, 2025, where 6,384 shares of common stock were surrendered at $10.7900 per share, leaving 58,595 shares directly owned after that transaction.
Coggins Eileen Mary reported acquisition or exercise transactions in this Form 4 filing.
Mistras Group, Inc. executive Eileen Mary Coggins, EVP and General Counsel, reported an equity compensation award in the form of 7,242 shares of common stock. The award represents restricted stock units earned from a performance award and was granted at a price of $0.00 per share. These units vest in four equal installments of 25% each on December 31 of 2026, 2027, 2028 and 2029. Following this grant, Coggins directly holds a total of 22,242 shares of Mistras Group common stock.
Mistras Group EVP and Chief Commercial Officer Gennaro A. D'Alterio reported equity compensation and related tax transactions. On February 25, 2026, he received a grant of 19,905 shares of common stock. On February 28, 2026, 655 and 862 shares were disposed of to cover tax withholding, leaving direct holdings just under 48,000 shares after these movements.
Mistras Group, Inc. major shareholder Aspasia Felice Vahaviolos reported a bona fide gift of 5,251,358 shares of common stock at no stated price per share. After this gift transfer, she directly owns 854,292 Mistras Group common shares.
Mistras Group Executive Chairman and director Manuel Stamatakis reported an equity grant from the company. On 01/02/2026, he acquired 40,000 shares of common stock at a price of $0, reported as an award of restricted stock units that will vest 100% on the first anniversary of the grant date. Following this transaction, he beneficially owns 424,299 shares of Mistras Group common stock in direct ownership. This Form 4/A is described as an amendment filed solely to correct an administrative error on the signature line, with no change to the reported award terms.
Mistras Group, Inc. senior executive and CFO Edward Prajzner reported a routine insider transaction involving company common stock. On 01/05/2026, 2,699 shares were disposed of at $12.65 per share under transaction code F, which indicates shares withheld to cover taxes. A footnote explains these shares were retained by the company to pay tax liabilities arising from the vesting of restricted stock units, rather than an open-market sale.
Following this tax-withholding event, Prajzner beneficially owns 119,021 shares of Mistras Group common stock directly. The document is filed as an amendment, which states it was submitted solely to correct an administrative error on the earlier signature line, with no change to the underlying transaction details.
Mistras Group, Inc. reported an insider equity transaction by its Senior Executive Vice President and Chief Financial Officer. On 01/05/2026, the officer had 2,699 shares of common stock withheld at a price of $12.65 per share to cover tax obligations arising from the vesting of restricted stock units. This did not represent an open-market sale.
Following this tax-withholding transaction, the reporting officer beneficially owned 119,021 shares of Mistras Group common stock, held directly.
Mistras Group, Inc. insider Manuel N. Stamatakis, a director and Executive Chairman, reported receiving an equity grant in the form of restricted stock units. On 01/02/2026, he was awarded 40,000 shares of common stock at a stated price of $0, increasing his beneficial ownership to 424,299 shares held directly.
The filing explains that this grant is an award of restricted stock units that will vest 100% on the first anniversary of the grant date, meaning the units are subject to a one-year vesting period before fully settling into shares.
Mistras Group, Inc. director Charles P. Pizzi reported an equity transaction in company stock. On 12/04/2025, a Form 4 shows a transaction in 2,150 shares of common stock under transaction code G at a reported price of $0 per share, indicating no cash amount for this transfer in the table. After this activity, the filing lists Pizzi as directly owning 66,618 shares of Mistras Group common stock. This filing reflects a change in the director’s reported holdings rather than any change to the company’s operations or financial results.
Mistras Group, Inc. executive Gennaro A. D'Alterio, EVP and Chief Commercial Officer, reported a routine equity transaction involving company stock. On 09/24/2025, 475 shares of common stock were withheld and disposed of at a price of $9.53 per share to cover tax liabilities triggered by the vesting of restricted stock units. This is described as shares withheld for payment of a tax liability, rather than an open-market sale.
After this tax-withholding transaction, D'Alterio beneficially owns 29,035 shares of Mistras Group common stock in direct form. The filing is made on Form 4 by a single reporting person and reflects ongoing equity-based compensation activity for a senior officer.
Eileen Mary Coggins, EVP & Chief Legal Officer of Mistras Group, acquired 15,000 restricted stock units that vest 100% on the first anniversary of the grant and holds 25,000 stock options exercisable one year after grant with an exercise price of $9.55 and an expiration date in 2035. After the reported transactions she beneficially owns 15,000 shares directly and 25,000 option shares listed as direct holdings. The Form 4 discloses the grant terms and the ownership changes without additional financial performance details.