Ostrom Climate Solutions Inc. — AGM Information 2021

Aug 7, 2021

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NATUREBANK ASSET MANAGEMENT INC.

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Security Class

Holder Account Number

Form of Proxy - Annual General and Special Meeting to be held on September 2, 2021

This Form of Proxy is solicited by and on behalf of Management.

Notes to proxy

1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting or any adjournment or postponement thereof. If you wish to appoint a person or company other than the Management Nominees whose names are printed herein, please insert the name of your chosen proxyholder in the space provided (see reverse).

2. If the securities are registered in the name of more than one owner (for example, joint ownership, trustees, executors, etc.), then all those registered should sign this proxy. If you are voting on behalf of a corporation or another individual you may be required to provide documentation evidencing your power to sign this proxy with signing capacity stated.

3. This proxy should be signed in the exact manner as the name(s) appear(s) on the proxy.

4. If a date is not inserted in the space provided on the reverse of this proxy, it will be deemed to bear the date on which it was mailed to the holder by Management.

5. The securities represented by this proxy will be voted as directed by the holder, however, if such a direction is not made in respect of any matter, and the proxy appoints the Management Nominees listed on the reverse, this proxy will be voted as recommended by Management.

6. The securities represented by this proxy will be voted in favour, or withheld from voting, or voted against each of the matters described herein, as applicable, in accordance with the instructions of the holder, on any ballot that may be called for. If you have specified a choice with respect to any matter to be acted on, the securities will be voted accordingly.

7. This proxy confers discretionary authority in respect of amendments or variations to matters identified in the Notice of Meeting and Management Information Circular or other matters that may properly come before the meeting or any adjournment or postponement thereof, unless prohibited by law.

8. This proxy should be read in conjunction with the accompanying documentation provided by Management.

Proxies submitted must be received by 11:00 am, PDT, on August 31, 2021.

VOTE USING THE TELEPHONE OR INTERNET 24 HOURS A DAY 7 DAYS A WEEK!

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To Vote Using the Telephone
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To Vote Using the Internet
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To Receive Documents
Electronically
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• Call the number listed BELOW from a touch tone • Go to the following web site: • You can enroll to receive future securityholder telephone. www.investorvote.com communications electronically by visiting 1-866-732-VOTE (8683) Toll Free • Smartphone? Scan the QR code to vote now. www.investorcentre.com.

If you vote by telephone or the Internet, DO NOT mail back this proxy.

Voting by mail may be the only method for securities held in the name of a corporation or securities being voted on behalf of another individual.

Voting by mail or by Internet are the only methods by which a holder may appoint a person as proxyholder other than the Management Nominees named on the reverse of this proxy. Instead of mailing this proxy, you may choose one of the two voting methods outlined above to vote this proxy.

To vote by telephone or the Internet, you will need to provide your CONTROL NUMBER listed below.

CONTROL NUMBER

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Appointment of Proxyholder

I/We being holder(s) of securities of NatureBank Asset Management Inc. (the “Company”) hereby appoint: Phil Cull, or failing this person, Rosita Morandin (the "Management Nominees")

OR

Print the name of the person you are appointing if this person is someone other than the Management Nominees listed herein.

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as my/our proxyholder with full power of substitution and to attend, act and to vote for and on behalf of the holder in accordance with the following direction (or if no directions have been given, as the proxyholder sees fit) and on all other matters that may properly come before the Annual General and Special Meeting of shareholders of the Company to be held at Unit 300 - 948 Homer Street, Vancouver on September 2, 2021 at 11:00 am, PDT and at any adjournment or postponement thereof.

VOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES.

					For	Against
1.Number of Directors
To set the number of Directors at nine	(9).
2.Election of Directors	For	Withhold	For	Withhold	For	Withhold	------- Fold
01. Harry Assenmacher		02. Gary Bull		03. Phil Cull
04. Guy O’Loughnane		05. Eduard Weber-Bemnet		06. Alexander Zang
					For	Withhold
3.Appointment of Auditors
Appointment of Davidson & Company LLP, Chartered Accountants, as Auditors of the Company for the ensuing year and authorizing the Directors
to fix their remuneration.
					For	Against
4.Annual Approval of Stock Option	Plan
Approve by ordinary resolution the Company's 10% rolling stock option plan, as amended.
5.Approval of Financial Statements					For	Against
Receive and approve the audited financial statements of the Company for the fiscal year ended			December 31, 2020 and the accompanying report
of the auditors.
					For	Against	-------
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6.Approval of Company Name Change
To approve the Company’s proposed name change to "Ostrum Climate Solutions Inc."
					For	Against

7. Amendment of Articles

To approve, by Special Resolution the amendment of Section 9.3 of the Company's Articles to provide for name changes by directors resolution.

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Signature of Proxyholder

I/We authorize you to act in accordance with my/our instructions set out above. I/We hereby revoke any proxy previously given with respect to the Meeting. If no voting instructions are indicated above, and the proxy appoints the Management Nominees, this Proxy will be voted as recommended by Management.

Signature(s) Date

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Interim Financial Statements - Mark this box if you would Annual Financial Statements - Mark this box if you would like to receive Interim Financial Statements and like to receive the Annual Financial Statements and accompanying Management’s Discussion and Analysis by accompanying Management’s Discussion and Analysis by mail. mail.

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If you are not mailing back your proxy, you may register online to receive the above financial report(s) by mail at www.computershare.com/mailinglist.

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