Company: LPSN
Filing Date: 2025-08-11
Form Type: DEFA14A
Source: 0001193125-25-177966
Chunk: 71

Company: LIVEPERSON INC
Filing Date: 2025-08-11
Form: DEFA14A
Chunk 71
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OF, the undersigned has duly executed this Certificate of as of the day and year first above written.

| LIVEPERSON, INC. |
| By:              |
| Name: [ ]        |
| Title: [ ]       |

Exhibit D

(See attached)

FORM OF TRANSFEREE JOINDER The undersigned (“ Transferee”) hereby acknowledges that it has read and understands the Exchange Agreement (the “ Agreement”), dated as of August 11, 2025, entered into by and among LivePerson, Inc. (the “ Company”), [Transferor’s Name](“ Transferor”), and other holders of the Company’s’ 0% Convertible Senior Notes due 2026 (the “ Existing Notes”), and, with respect to the Existing Notes acquired from the Transferor, agrees to be bound to the terms and conditions thereof to the extent that Transferor was thereby bound, without modification, and shall be deemed a “Noteholder” under the terms of the Agreement. All Existing Notes held by the Transferee (now or hereafter) shall be subject in all respects to the Agreement. Date Executed: ___________, 2025 [Transferee’s Name]

| By:    |
| By:    |
| Name:  |
| Title: |

Aggregate Principal Amount of Existing Notes acquired:

| $                    |
| Address for notices: |
| Attention:           |

| Email: |

Exhibit 99.1

LivePerson Announces Deleveraging Transaction

Enters into agreement to exchange $341.1 million of its outstanding 2026 Convertible

Senior Notes for $45.0 million in cash, $115.0 million of 2029 Senior Subordinated Secured Notes and Common and Preferred Equity

NEW YORK, August 11, 2025 — LivePerson, Inc. (NASDAQ: LPSN) (“LivePerson,” the “Company,” “we” or
“us”), a leading provider of trusted enterprise conversational AI and outcome-driven digital transformation, today announced that holders of an aggregate $341.1 million principal amount of the Company’s Convertible Senior Notes
due 2026 (the “Noteholders” and such notes, the “2026 Notes”), have entered into a binding agreement to exchange (the “Exchange”) their 2026 Notes for a mix of consideration, consisting of (i) $45.0 million of
cash, (ii) $115.0 million of 10.0% Senior Subordinated