Exhibit 99.1 HarborOne Bancorp, Inc. Announces 2024 First Quarter Results Contact: Joseph F. Casey, President and CEO Brockton, Massachusetts (April 25, 2024): HarborOne Bancorp, Inc. (the "Company" or "HarborOne") (NASDAQ: HONE), the holding company for HarborOne Bank (the "Bank"), announced net income of $7.3 million, or $0.17 per diluted share, for the first quarter of 2024, compared to a net loss of $7.1 million, or $0.17 per diluted share for the preceding quarter, and net income of $7.3 million, or $0 ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction of incorporation or o ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction o ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction of inc ...

or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 Massachusetts 81-1607465 (State or other jurisdiction of in ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction of incorporation or o ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction o ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction of inc ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction of in ...

Table of Contents For the Fiscal Year Ended December 31, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-38955 HarborOne Bancorp, Inc. (Exact name of registrant as specified in its charter) Massachusetts 81-1607465 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 1 ...