Exhibit 99.6
PRELIMINARY PROXY
LEGATO MERGER CORP. III
777 Third Avenue, 37th Floor
New York, NY 10017
EXTRAORDINARY GENERAL MEETING
[●] EASTERN TIME
[●], 2026
YOUR VOTE IS IMPORTANT
FOLD AND DETACH HERE
LEGATO MERGER CORP. III
THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS
FOR THE EXTRAORDINARY GENERAL MEETING TO BE HELD ON
[●], 2026
The undersigned, revoking any previous proxies relating to these shares, hereby acknowledges receipt of the Notice and Proxy Statement, dated [●], 2026, in connection with the extraordinary general meeting to be held at [●] Eastern Time, on [●], 2026, virtually, at [●], and hereby appoints Greg Monahan, Eric Rosenfeld and Adam Jaffe the attorney and proxy of the undersigned, with power of substitution, to vote all ordinary shares of Legato Merger Corp. III (the “Company”) registered in the name provided, which the undersigned is entitled to vote at the extraordinary general meeting of shareholders, and at any adjournments thereof, with all the powers the undersigned would have if personally present. Without limiting the general authorization hereby given, said proxies are, and each of them is, instructed to vote or act as follows on the proposals set forth in the accompanying proxy statement. Unless otherwise specified, all capitalized terms shall have the same meanings as those defined in the Notice and Proxy Statement.
THIS PROXY, WHEN EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED HEREIN. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED “FOR” THE BUSINESS COMBINATION PROPOSAL (PROPOSAL 1), “FOR” THE MERGER PROPOSAL (PROPOSAL 2), “FOR” THE ORGANIZATIONAL DOCUMENTS PROPOSAL (PROPOSAL 3) AND “FOR” THE ADJOURNMENT PROPOSAL (PROPOSAL 4), IF PRESENTED.
THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” ALL PROPOSALS.
Important Notice Regarding the Availability of Proxy Materials for the Extraordinary General Meeting to be held on [●], 2026: This notice of meeting and the accompany proxy statement are available at [●].
| Proposal 1 — Business combination Proposal | FOR | AGAINST | ABSTAIN | |||
| A proposal to approve the Business Combination Agreement, as amended, among the Company, Einride AB and Einride Cayman Sub Limited and the transactions contemplated thereby, as described in the Proxy Statement. | ☐ | ☐ | ☐ |
|
Proposal 2 — Merger Proposal |
FOR |
AGAINST |
ABSTAIN | |||
| A proposal to approve Plan of Merger and the transactions contemplated thereunder, as described in the Proxy Statement. | ☐ | ☐ | ☐ | |||
| Proposal 3 — Organizational Documents Proposal | FOR | AGAINST | ABSTAIN | |||
| A proposal to approve the material differences between the Company’s articles and Einride’s articles, as described in the Proxy Statement. | ☐ | ☐ | ☐ | |||
| Proposal 4 — Adjournment Proposal | FOR | AGAINST | ABSTAIN | |||
| A proposal to adjourn the Extraordinary General Meeting to a later date or dates, if the Company determines that additional time is necessary to complete the Business Combination. | ☐ | ☐ | ☐ |
| Dated: ________________________, 2026 | |
| Shareholder’s Signature | |
| Shareholder’s Signature |
Signature should agree with name printed hereon. If share is held in the name of more than one person, EACH joint owner should sign. Executors, administrators, trustees, guardians, and attorneys should indicate the capacity in which they sign. Attorneys should submit powers of attorney.
PLEASE SIGN, DATE AND RETURN THE PROXY IN THE ENVELOPE ENCLOSED TO MACKENZIE PARTNERS, INC. THIS PROXY WILL BE VOTED IN THE MANNER DIRECTED HEREIN BY THE UNDERSIGNED SHAREHOLDER. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED “FOR” THE BUSINESS COMBINATION PROPOSAL (PROPOSAL 1), “FOR” THE MERGER PROPOSAL (PROPOSAL 2), “FOR” THE ORGANIZATIONAL DOCUMENTS PROPOSAL (PROPOSAL 3) AND “FOR” THE ADJOURNMENT PROPOSAL (PROPOSAL 4), IF PRESENTED, AND WILL GRANT DISCRETIONARY AUTHORITY TO VOTE UPON SUCH OTHER MATTERS AS MAY PROPERLY COME BEFORE THE EXTRAORDINARY GENERAL MEETING OR ANY ADJOURNMENTS THEREOF. THIS PROXY WILL REVOKE ALL PRIOR PROXIES SIGNED BY YOU.