Results of Operations and Financial Condition On August 6, 2026, Covista Inc. (“Covista”) issued a press release announcing its fourth quarter and full year fiscal 2026 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as…

Director — Ms. Emily Chiu, Ms. Leslie Storms: Appointment of two new independent directors to the Board.

Results of Operations and Financial Condition On May 7, 2026, Covista Inc. (“Covista”) issued a press release announcing its third quarter fiscal 2026 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exc…

Regulation FD Disclosure ​ On April 9, 2026, Covista Inc. (“Covista”) released an investor newsletter, which provided updates on key milestones, strategic developments, and operational progress. The investor newsletter is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. ​ The information furnished pursuant to this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended…

Termination of a Material Definitive Agreement ​ On February 13, 2026, the Trustee sent a conditional notice of redemption on behalf of Covista to the holders of the Notes, relating to the redemption in full of the Notes outstanding as of March 2, 2026 (the “Redemption Date”). In connection therewith, on the Redemption Date, Covista deposited with the Trustee funds sufficient to redeem all Notes outstanding on the Redemption Date. The redemption payment (the “Redemption Payment”) included app…

Entry into a Material Definitive Agreement ​ On March 2, 2026, Covista Inc. (formerly known as Adtalem Global Education Inc.) (“Covista”, the “Company”, or “we”) entered into Amendment No. 5 to Credit Agreement and Incremental Assumption Agreement, dated as of March 2, 2026 (the “Amendment”), by and among the Company, as borrower, the guarantors party thereto, the lender party thereto and Morgan Stanley Senior Funding, Inc. (“MSSF”), as administrative agent (in such capacity, the “Administrat…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant ​ The information required by this item is included in

shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to liabilities under that Section, unless the Company specifically states that the information is to be considered “filed” under the Exchange Act or specifically incorporates it by reference into a filing under the Securities Act or the Exchange Act. ​ Forward-Looking Statements Certain statements contained in this Form 8-K and related press release and investor presentation are…

Results of Operations and Financial Condition ​ On January 28, 2026, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its second quarter fiscal 2026 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1…

Other Events ​ On December 15, 2025, Adtalem Global Education Inc. (“Adtalem” or the “Company”) issued a press release announcing that its Board of Directors had authorized the repurchase of up to an additional $750 million in aggregate value of shares of common stock from time to time, in amounts, at prices, and at such times as Adtalem deems appropriate, subject to market conditions and other considerations, and in accordance with applicable securities laws and regulations, including Rule 1…

Results of Operations and Financial Condition ​ On October 30, 2025, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its first quarter fiscal 2026 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 19…

​ Cautionary Disclosure Regarding Forward-Looking Statements Certain statements contained in this Form 8-K and related press release are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements provide current expectations of future events based on certain assumptions and include any statement that does not directly relate to any historical or current fact, which includes statements regarding Adtalem’s future growth. Forward-loo…

Results of Operations and Financial Condition ​ On August 7, 2025, Adtalem issued a press release announcing its fourth quarter and full year fiscal 2025 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “…

Entry Into a Material Definitive Agreement ​ On August 6, 2025, Adtalem Global Education Inc. (“Adtalem”) entered into Amendment No. 4 to Credit Agreement and Incremental Assumption Agreement (the “Amendment”), by and among Adtalem, the other guarantors party thereto, the lenders and issuing banks party thereto and Morgan Stanley Senior Funding, Inc., as administrative agent and collateral agent, which amended our Credit Agreement, dated as of August 12, 2021 (as amended, amended and restated…

Results of Operations and Financial Condition ​ On May 8, 2025, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its third quarter fiscal 2025 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, a…

Other Events ​ On May 6, 2025, Adtalem Global Education Inc. (“Adtalem” or the “Company”) issued a press release announcing that its Board of Directors had authorized the repurchase of up to an additional $150 million in aggregate value of shares of common stock from time to time, in amounts, at prices, and at such times as Adtalem deems appropriate, subject to market conditions and other considerations, and in accordance with applicable securities laws and regulations, including Rule 10b-18…

Results of Operations and Financial Condition On January 30, 2025, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its second quarter fiscal 2025 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 193…

Chairman of the Board — Stephen W. Beard: The CEO was elected as Chairman of the Board, expanding his role without departing the company, while the previous Chairman remains on the board in a different capacity.

Results of Operations and Financial Condition. ​ On October 29, 2024, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its first quarter fiscal 2025 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

of Form 8-K and Item 601(a)(5) of Regulation S-K. Adtalem will provide, on a supplemental basis, a copy of any omitted schedule or attachment to the Securities and Exchange Commission or its staff upon request. ​ SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ADTALEM GLOBAL EDUCATION INC. ​ ​ ​ By: /s/ Robert J. Phelan ​ ​ Robert J. Phelan ​ ​ S…

Other Events. ​ On August 21, 2024, we entered into Amendment No. 3 to Credit Agreement (the “Amendment”), by and among Adtalem Global Education Inc. (“Adtalem”), the guarantors party thereto, the lender party thereto and Morgan Stanley Senior Funding, Inc., as administrative agent (in such capacity, the “Administrative Agent”), which amended our Credit Agreement, dated as of August 12, 2021 (as amended from time to time, the “Existing Credit Agreement”, and the Existing Credit Agreement, as…

Results of Operations and Financial Condition On August 6, 2024, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its fourth quarter and full year fiscal 2024 academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchang…

Results of Operations and Financial Condition On May 2, 2024, Adtalem Global Education Inc. (“Adtalem”) issued a press release announcing its fiscal 2024 third quarter academic, operating and financial results. The press release is attached hereto as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference. The information furnished pursuant to this Item 2.02, including Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as…

President, Medical & Veterinary — Dr. John Danaher: The filing details the separation agreement and severance terms for the departure of a senior business unit president, which is a genuine executive departure but not necessarily a negative shock given the structured exit.