SEC Filing Document

Company: Berto Acquisition Corp. II
Ticker: GUAC
CIK: 2081515
Filing Type: S-1
Document Type: EX-10.1
Date Filed: 2026-04-27
Accession Number: 0001829126-26-003952
Exchange: 
SIC Code: 6770
SIC Description: Blank Checks
URL: https://www.sec.gov/Archives/edgar/data/2081515/000182912626003952/bertoacquisition2_ex10-1.htm

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Combination within the time period set forth in the Charter or (B) with respect to any other material provisions relating to rights of holders of Ordinary Shares or pre-initial Business Combination activity or in the context of a tender offer made by the Company to purchase Offering Shares. Notwithstanding the foregoing, the Sponsor, the Consultant, the Insiders, the Investors and their respective affiliates shall be entitled to redemption and liquidation rights with respect to any Offering Shares it or they hold if the Company fails to consummate a Business Combination within the time period set forth in the Charter. For purposes of clarity, the Consultant is not waiving any redemption right or claim to funds held in the Trust Account relating to a redemption or liquidation rights for any shares or units purchased it may purchase in the Company’s Public Offering or public aftermarket unless otherwise provided in other agreements.

4.	In addition to the provisions set forth in paragraphs 7(a) and 7(b) below, during the period commencing on the effective date of the
Underwriting Agreement and ending 180 days after such date, the Sponsor, the Consultant, each Insider and each Investor shall not, without
the prior written consent of the Representatives, (i) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option
to purchase or otherwise dispose of or agree to dispose of, directly or indirectly, or establish or increase a put equivalent position
or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended
(the “ Exchange Act ”), and the rules and regulations of the Commission promulgated thereunder, with respect to,
any Units, Ordinary Shares (including, but not limited to, Founder Shares), Warrants or any securities convertible into, or exercisable,
or exchangeable for, Ordinary Shares owned by it, him or her, (ii) enter into any swap or other arrangement that transfers to another,
in whole or in part, any of the economic consequences of ownership of any Units, Ordinary Shares (including, but not limited to, Founder
Shares), Warrants or any securities convertible into, or exercisable, or exchangeable for, Ordinary Shares owned by it, him or her, whether
any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (iii) publicly announce any intention to
effect any transaction specified in clause (i) or (ii). The provisions of this paragraph will not apply to (x) the forfeiture of any Founder
Shares pursuant to their terms, (y) any transfer permitted under paragraph 7(c) hereof or (z) if the release or waiver is effected solely
to permit a transfer not for consideration and the transferee has agreed in writing to be bound by the same terms described in this Letter
Agreement to the extent and for the duration that such terms remain in effect at the time of the transfer. Notwithstanding the foregoing,
with respect to the Consultant, the transfer restrictions described in this Paragraph 3 shall only apply to the Founder Shares held by
it, not including any shares or units it may purchase in the Company’s Public Offering or public aftermarket.

5.	In the event of the liquidation of the Trust Account upon the failure of the Company to consummate its Business Combination within the
time period set forth in the Charter, the Sponsor (which for purposes of this paragraph 4, shall not include any members or managers
of the Sponsor) (the “ Indemnitor ”) agrees to indemnify and hold harmless the Company against any and all loss, liability,
claim, damage and expense whatsoever (including, but not limited to, any and all legal
or other expenses reasonably incurred in investigating, preparing or defending against any litigation, whether pending or threatened)
to which the Company may become subject as a result of any claim by (i) any third
party for services rendered or products sold to the Company (except for the Company’s independent registered public accountants) or (ii) any prospective target business with which the Company has entered into
a written letter of intent, confidentiality or other similar agreement or Business
Combination agreement (a “ Target ”); provided, however, that such indemnification of the Company by the Indemnitor
(x) shall apply only to the extent necessary to ensure that such claims by a third
party or a Target do not reduce the amount of funds in the Trust Account to below
the lesser of (i) $10.00 per Offering Share and (ii) the actual amount per Offering
Share held in the Trust Account as of the date of the liquidation of the Trust Account,
if less than $10.00 per Offering Share is then held in the Trust Account due to reductions
in the value of the trust assets, less taxes payable, (y) shall not apply to any claims
by a third party or a Target which executed a waiver of any and all rights to the
monies held in the Trust Account (whether or not such waiver is enforceable) and (z)
shall not apply to any claims under the Company’s indemnity of the Underwriters against certain liabilities, including liabilities
under the Securities Act of 1933, as amended. In the event that any such executed waiver is deemed to be unenforceable against
such third party, the Indemnitor shall not be responsible to the extent of any liability
for such third-party claims. The Indemnitor shall have the right to defend against any such claim with counsel
of its choice reasonably satisfactory to the Company if, within 15 days following
written receipt of notice of the claim to the Indemnitor, the Indemnitor notifies
the Company in writing that it shall undertake such defense.

6.	To the extent that the Underwriters do not exercise their over-allotment option to purchase up to an additional 3,750,000 Units within
45 days from the date of the Prospectus (and as further described in the Prospectus), the Sponsor and the Investors agree to forfeit,
at no cost, a number of Founder Shares equal to 937,500 multiplied by a fraction, (i) the numerator of which is 3,750,000 minus the number
of Units purchased by the Underwriters upon the exercise of their over-allotment option, and (ii) the denominator of which is 3,750,000.
All references in this Letter Agreement to Founder Shares being forfeited shall take effect as surrenders for no consideration of such
Founder Shares as a matter of Cayman Islands law. The forfeiture will be adjusted to the extent that the over-allotment option is not
exercised in full by the Underwriters so that the Founder Shares will represent an aggregate of 20.0% of the Company’s issued and
outstanding Ordinary Shares after the Public Offering (exclusive of any securities purchased in a private placement simultaneously with
the Public Offering). The forfeiture of Founder Shares, when applicable, shall be allocated pro rata among the respective holders thereof
with the following priority: (i) first, Berto Acquisition Sponsor II LLC, (ii) second, Harry L. You, and (iii) third, Robert You. The
Sponsor further agrees that to the extent that the size of the Public Offering is increased or decreased, the Company will purchase or
sell Founder Shares to the Sponsor, or effect a share repurchase or share capitalization, as applicable, prior to selling Founder Shares
to the Investors pursuant to the subscription agreements between the Company and the Investors, and in any event prior to the consummation
of the Public Offering, in such amount as to maintain the ownership of the Sponsor, the Consultant and Investors, collectively, prior
to the Public Offering at 20.0% of its issued and outstanding Ordinary Shares upon the consummation of the Public Offering. In connection
with such increase or decrease in the size of the Public Offering, then (A) the references to 3,750,000 in the numerator and denominator
of the formula in the first sentence of this paragraph shall be changed to a number equal to 15% of the number of Public Shares included
in the Units issued in the Public Offering and (B) the reference to 937,500 in the formula set forth in the first sentence of this paragraph
shall be adjusted to such number of Founder Shares that the Sponsor and/or the Investors would have to surrender to the Company in order
for the outstanding Founder Shares to equal 20.0% of the Company’s issued and outstanding Ordinary Shares after the Public Offering
(exclusive of any securities purchased in a private placement simultaneously with the Public Offering). For avoidance of doubt, notwithstanding
the foregoing, the shares held by the Consultant, the individual investor, Oanh Truong, and their respective successor or permitted assignees
shall not be subject to the forfeiture in the event that the Underwriters do not fully exercise their over-allotment option, and the shares
held by the Consultant, Oanh Truong, and their respective successor or permitted assignees shall not be subject to the share repurchase
or share capitalization in the event of a downsize or upsize of the Public Offering.