PyroGenesis Inc. — AGM Information 2021

Apr 26, 2021

April 26, 2021

F iled Via SEDAR

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TO ALL APPLICABLE EXCHANGES AND COMMISSIONS:

Subject: XIGEM TECHNOLOGIES CORPORATION Confirmation of Notice of Record and Meeting Dates

Dear Sirs:

We advise the following with respect to the upcoming Annual General & Special Meeting of Security Holders for the subject issuer:

1. CUSIP Number 98422W103

ISIN Number CA98422W1032

1. Meeting Type:

2. Record Date:

3. Beneficial Ownership Date:

4. Mail Date:

5. Meeting Date:

Annual General & Special May 21, 2021 May 21, 2021 June 7 2021 June 28, 2021

1. Classes or Series of Securities that entitle the holder to receive Notice of the Meeting:

COMMON

1. Classes or Series of Securities that entitle the holder to vote at the meeting:

COMMON

1. Business to be conducted at the meeting:

Annual General & Special

1. Notice-and-Access:

Registered Shareholders: Beneficial Holders: Stratification Level: E-Delivery

No No Not Applicable No

1. Reporting issuer is sending proxy-related Materials directly to Non-Objecting Beneficial Owners:

Yes

1. Issuer paying for delivery to Objecting Beneficial Owners:

No

1. Issuer paying for delivery to US Non-Objecting Beneficial Owners: No

In accordance with applicable securities regulations we are filing this information with you in our capacity as agent of the Corporation.

Sincerely,

Capital Transfer Agency

Agent for Xigem Technologies Inc.

_____________________________________________________________________________________________ 390 Bay Street, Suite 920, Toronto, ON M5H 2Y2 Tel: 416-350-5007 Fax 416-350-5008 Website: www.capitaltransferagency.com email: info@capitaltransferagency.com