United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-Q ☒Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended December 31, 2019 or ☐Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From _________ to ________ Commission File Number: 1-12235 TRIUMPH GROUP, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorpo ...

United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-Q ☒Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2019 or ☐Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From _________ to ________ Commission File Number: 1-12235 TRIUMPH GROUP, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorp ...

Table of Contents United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-Q ☒Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2019 or ☐Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From _________ to ________ Commission File Number: 1-12235 TRIUMPH GROUP, INC. (Exact name of registrant as specified in its charter) (State or other jurisdict ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ____________________________________________________________________________ FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2019 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-12235 Triumph Group, Inc. (Exact name of registrant as specified ...

Table of Contents United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-Q ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended December 31, 2018 or ¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From _________ to ________ Commission File Number: 1-12235 TRIUMPH GROUP, INC. (Exact name of registrant as specified in its charter) (State or other jur ...