ITEM (6) PURCHASER INFORMATION (continued from reverse side) Bank Use Qualifying Account Number(s) continued Names(s) Account continued ITEM (8) ASSOCIATES / ACTING IN CONCERT (continued from reverse side) If you checked the box in Item 8 on the reverse side of this form, list below all other orders submitted by you or your associates (as defined below) or by persons acting in concert with you (as defined below) and list the number of shares of HarborOne Bancorp, Inc. you or your associates currently own. Name(s) listed on other stock order forms submitted Number of shares ordered Name(s) of existing shareholders Number of shares owned Associate – The term “associate” of a person means: (1) any corporation or organization (other than HarborOne Mutual Bancshares, HarborOne NorthEast Bancorp, Inc., HarborOne Bancorp, Inc. or HarborOne Bank or a majority owned subsidiary of any of those entities) of which a person is a senior officer, partner or is, directly or indirectly, 10% beneficial shareholder; (2) any trust or other estate in which the person has a substantial beneficial interest or serves as a trustee or in a similar fiduciary capacity; and (3) any relative or spouse of such person, or any relative of such spouse, who either has the same home as the person or who is a director, trustee or officer of HarborOne Mutual Bancshares, HarborOne NorthEast Bancorp, Inc., HarborOne Bancorp, Inc. or HarborOne Bank, or any subsidiary thereof. Acting in concert – The term “acting in concert” means persons seeking to combine or pool their voting or other interests in the securities of an issuer for a common purpose, pursuant to any contract, understanding, relationship, agreement or other arrangement, whether written or otherwise. In general, a person who acts in concert with another party will also be deemed to be acting in concert with any person who is also acting in concert with that other party. We may presume that certain persons are acting in concert based upon various facts, including, among other things, joint account relationships, common address on our records, or that such persons have filed joint Schedules 13D or 13G with the Securities and Exchange Commission with respect to other companies. For purposes of the plan of conversion, directors and trustees of HarborOne Mutual Bancshares, HarborOne Bancorp, Inc., HarborOne NorthEast Bancorp, Inc. and HarborOne Bank are not treated as associates of each other solely because of their membership on our board of directors or trustees. Unless we determine otherwise, spouses, persons having the same address and persons exercising subscription rights through qualifying accounts registered to the same address will be presumed to be acting in concert. Immediate Family – The term ‘‘immediate family’’ means any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law, and includes adoptive relationships. Community Offering Preferred Cities/Towns of Massachusetts and Rhode Island – Massachusetts cities and towns of Abington, Acushnet, Attleboro, Avon, Berkley, Braintree, Bridgewater, Brockton, Canton, Carver, Cohasset, Dartmouth, Dighton, Duxbury, East Bridgewater, Easton, Fairhaven, Fall River, Foxboro, Freetown, Halifax, Hanover, Hanson, Hingham, Holbrook, Hull, Kingston, Lakeville, Mansfield, Marion, Marshfield, Mattapoisett, Middleborough, Milton, New Bedford, North Attleboro, Norton, Norwell, Plainville, Pembroke, Plymouth, Plympton, Quincy, Randolph, Raynham, Rehoboth, Rochester, Rockland, Seekonk, Scituate, Sharon, Somerset, Stoughton, Swansea, Taunton, Wareham, West Bridgewater, Westport, Weymouth and Whitman, and the Rhode Island cities and towns of Barrington, Bristol, Burrillville, Central Falls, Charlestown, Coventry, Cranston, Cumberland, East Greenwich, East Providence, Exeter, Foster, Glocester, Hopkinton, Jamestown, Johnston, Lincoln, Little Compton, Middletown, Narragansett, New Shoreham, Newport, North Kingstown, North Providence, North Smithfield, Pawtucket, Portsmouth, Providence, Richmond, Scituate, Smithfield, South Kingstown, Tiverton, Warren, Warwick, West Greenwich, West Warwick, Westerly, and Woonsocket. ITEM (9) ACKNOWLEDGEMENT & SIGNATURE (continued from reverse side) Under penalty of perjury, I hereby certify that the Social Security or Tax ID Number and the information provided on this stock order form are true, correct and complete and that I am not subject to back-up withholding. It is understood that this stock order form will be accepted in accordance with, and subject to, the terms and conditions of the plan of reorganization and minority stock issuance of HarborOne Bank and HarborOne Mutual Bancshares described in the accompanying prospectus. Federal regulations prohibit any person from transferring, or entering into any agreement, directly or indirectly, to transfer the legal or beneficial ownership of subscription rights or the underlying securities to the account of another. HarborOne Bank, HarborOne NorthEast Bancorp, Inc., and HarborOne Mutual Bancshares will pursue any and all legal and equitable remedies in the event they become aware of the transfer of subscription rights and will not honor orders known by them to involve such transfer. Under penalty of perjury, I certify that I am purchasing shares solely for my account and that there is no agreement or understanding regarding the sale or transfer of such shares, or my right to subscribe for shares.
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