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Alerts and Notices Regulatory Notices

Regulatory Notice 23-14: Amendment to Rule 19.3

Date: September 15, 2023 Description: Rule 19.3 has been amended to permit options on certain underlying securities to be listed and trading more promptly following an IPO.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-13: Signaling of Impending Orders and Prearranged Trading

Date: September 15, 2023 Description: Regulatory Notice regarding Signaling of Impending Orders and Prearranged Trading

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-12: Options Position Limits

Date: September 14, 2023 Description: Notice regarding Position Limits Applicable to Members of MEMX Options.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-11: Order Origin Code Requirements

Date: September 14, 2023 Description: Order Origin Code Requirements Applicable to MEMX Options.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-10: Options Regulatory Fee Effective Date

Date: September 13, 2023 Description: The Exchange’s previously announced Options Regulatory Fee will be effective on September 20, 2023, subject to filing with the SEC.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-09: Test Symbol Usage

Date: August 14, 2023 Description: Reminder regarding test symbol usage.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-08: Options Principal Requirements

Date: August 7, 2023 Description: Regulatory notice to inform all MEMX Options Members about the Options Principal requirements.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-07: MEMX Options – Options Regulatory Fee

Date: August 1, 2023 Description: MEMX Options – Notice Announcing Options Regulatory Fee Effective September 13, 2023, subject to filing with the SEC.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-06: Obvious Error

Date: July 27, 2023 Description: Process for the Nullification and Adjustment of Options Transactions including Obvious Errors

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-05: Options Market Maker Obligations

Date: July 21, 2023 Description: Options Market Maker Obligations and Excused Withdrawal of Market Maker Quotations