The following terms shall have the meaning specified in this Rule solely for the purpose of this Options 5:

(a) "Best Bid" and "Best Offer" mean the highest priced Bid and the lowest priced Offer.

(b) "Bid" or "Offer" means the bid price or the offer price communicated by a Member of an Eligible Exchange to any Broker/Dealer, or to any customer, at which it is willing to buy or sell, as either principal or agent, but shall not include indications of interest.

(c) "Broker/Dealer" means an individual or organization registered with the SEC in accordance with Section 15(b)(1) of the Exchange Act or a foreign broker or dealer exempt from such registration pursuant to Rule 15a-6 under the Exchange Act.

(d) "Complex Trade" means: (i) the execution of an order in an option series in conjunction with the execution of one or more related order(s) in different option series in the same underlying security occurring at or near the same time in a ratio that is equal to or greater than one-to-three (.333) and less than or equal to three-to-one (3.0) and for the purpose of executing a particular investment strategy; or (ii) the execution of a stock-option order to buy or sell a stated number of units of an underlying stock or a security convertible into the underlying stock ("convertible security") coupled with the purchase or sale of option contract(s) on the opposite side of the market representing either (A) the same number of units of the underlying stock or convertible security, or (B) the number of units of the underlying stock or convertible security necessary to create a delta neutral position, but in no case in a ratio greater than eight-to-one (8.00), where the ratio represents the total number of units of the underlying stock or convertible security in the option leg to the total number of units of the underlying stock or convertible security in the stock leg.

(e) "Crossed Market" means a quoted market in which a Protected Bid is higher than a Protected Offer in a series of an Eligible Class.

(f) "Customer" means an individual or organization that is not a Broker/Dealer.

(g) "Eligible Exchange" means a national securities exchange registered with the SEC in accordance with Section 6(a) of the Exchange Act that: (a) is a Participant Exchange in OCC (as that term is defined in Section VII of the OCC by-laws); (b) is a party to the OPRA Plan (as that term is described in Section I of the OPRA Plan); and (c) if the national securities exchange is not a party to the Plan, is a participant in another plan approved by the Commission providing for comparable Trade-Through and Locked and Crossed Market protection.

(h) "Intermarket Sweep Order ("ISO")" means a limit order for an options series that, simultaneously with the routing of the ISO, one or more additional ISOs, as necessary, are routed to execute against the full displayed size of any Protected Bid, in the case of a limit order to sell, or any Protected Offer, in the case of a limit order to buy, for the options series with a price that is superior to the limit price of the ISO. A Member may submit an Intermarket Sweep Order to the Exchange only if it has simultaneously routed one or more additional Intermarket Sweep Orders to execute against the full displayed size of any Protected Bid, in the case of a limit order to sell, or Protected Offer, in the case of a limit order to buy, for an options series with a price that is superior to the limit price of the Intermarket Sweep Order.

(i) "Locked Market" means a quoted market in which a Protected Bid is equal to a Protected Offer in a series of an Eligible Options Class.

(j) "NBBO" means the national best bid and offer in an options series as calculated by an Eligible Exchange.

(k) "Non-Firm" means, with respect to Quotations, that Members of a Eligible Exchange are relieved of their obligation to be firm for their Quotations pursuant to Rule 602 under the Exchange Act.

(l) "OPRA Plan" means the plan filed with the SEC pursuant to Section 11Aa(1)(C)(iii) of the Exchange Act, approved by the SEC and declared effective as of January 22, 1976, as from time to time amended.

(m) "Participant" means an Eligible Exchange that is a party to the Plan.

(n) "Plan" means the Options Order Protection and Locked/Crossed Market Plan, as such plan may be amended from time to time.

(o) "Protected Bid" or "Protected Offer" means a Bid or Offer in an options series, respectively, that:

(a) is disseminated pursuant to the OPRA Plan; and

(b) is the Best Bid or Best Offer, respectively, displayed by an Eligible Exchange.

(p) "Quotation" means a Bid or Offer.

(q) "Trade-Through" means a transaction in an option series at a price that is lower than a Protected Bid or higher than a Protected Offer.

Adopted June 6, 2019 (SR-ISE-2019-17); amended Feb. 3, 2023 (SR-ISE-2023-06), operative Mar. 5, 2023; amended May 17, 2023 (SR-ISE-2023-10), operative Jun. 16, 2023.

Changes to this rule have been approved, but not implemented. For more information, see the attached document.

(a) Avoidance of Trade-Throughs. Except as provided in paragraph (b) below, Members shall not effect Trade-Throughs.

(b) Exceptions to Trade-Through Liability. The provisions of paragraph (a) shall not apply under the following circumstances:

(1) If an Eligible Exchange repeatedly fails to respond within one second to incoming orders attempting to access its Protected Quotations, the Exchange may bypass those Protected Quotations by:

(i) notifying the non-responding Eligible Exchange immediately after (or at the same time as) electing self-help; and

(ii) assessing whether the cause of the problem lies with its own systems and, if so, taking immediate steps to resolve the problem;

Any time a determination to bypass the Protected Quotations of an Eligible Exchange is made pursuant to this subparagraph, the Exchange must promptly document the reasons supporting such determination;

(2) The transaction traded through a Protected Quotation being disseminated by an Eligible Exchange during a trading rotation;

(3) The transaction that constituted the Trade-Through occurred when there was a Crossed Market;

(4) The transaction that constitutes the Trade-Through is the execution of an order identified as an ISO, or the transaction that constitutes the Trade-Through is effected by the Exchange while simultaneously routing an ISO to execute against the full displayed size of any better-priced Protected Quotation;

(5) The Eligible Exchange displaying the Protected Quotation that was traded through had displayed, within one second prior to execution of the Trade-Through, a Best Bid or Best Offer, as applicable, for the options series with a price that was equal or inferior to the price of the Trade-Through transaction;

(6) The Protected Quotation traded through was being disseminated from an Eligible Exchange whose Quotations were Non-Firm with respect to such options series;

(7) The transaction that constituted the Trade-Through was effected as a portion of a Complex Trade;

(8) The transaction that constituted the Trade-Through was the execution of an order for which, at the time of receipt of the order, a Member had guaranteed an execution at no worse than a specified price (a "stopped order"), where:

(i) the stopped order was for the account of a Customer;

(ii) the Customer agreed to the specified price on an order-by-order basis; and

(iii) the price of the Trade-Through was, for a stopped buy order, lower than the national Best Bid in the options series at the time of execution, or, for a stopped sell order, higher than the national Best Offer in the options series at the time of execution;

(9) The transaction that constituted the Trade-Through was the execution of an order that was stopped at a price that did not Trade-Through an Eligible Exchange at the time of the stop; or

(10) The transaction that constituted the Trade-Through was the execution of an order at a price that was not based, directly or indirectly, on the quoted price of the options series at the time of execution and for which the material terms were not reasonably determinable at the time the commitment to execute the order was made.

Supplementary Material to Options 5, Section 2

.01 All public customer ISOs entered by an Electronic Access Member on behalf of an Eligible Exchange shall be represented on the Exchange as Priority Customer Orders, as defined in Options 1, Section 1(a)(38). There shall be no obligation on Electronic Access Members to determine whether the public customer for whom the Eligible Exchange is routing an ISO meets the definition of a Priority Customer.

.02 When an incoming order is priced at or through the ABBO, when the ABBO is better than the Exchange BBO, such order shall be exposed at the current NBBO to all Exchange Members for a time period established by the Exchange not to exceed one (1) second. During the exposure period, Exchange Members may enter responses up to the size of the order being exposed in the regular trading increment applicable to the option. If a trading halt is initiated during the exposure period, the exposure period will be terminated without execution.

(a) If at the end of the exposure period, the order is executable at the then-current NBBO and the Nasdaq ISE is not at the then-current NBBO, responses that equal or better the NBBO will be executed in price priority, and at the same price, allocated pro-rata based on size (i.e., the percentage of the total number of contracts available at the same price that is represented by the size of a Member's response).

(b) If during the exposure period, the order becomes executable on the Nasdaq ISE at the prevailing NBBO, the exposure period will be terminated, and the order will be executed against orders and quotes on the book and responses received during the exposure period. Such interest will be executed in price priority. At the same price, Priority Customer Orders will be executed first in time priority and then all other interest (orders, quotes and responses) will be allocated pro-rata based on size.

(c) If during the exposure period the Exchange receives an unrelated order on the opposite side of the market from the exposed order that could trade against the exposed order at the prevailing NBBO price, the exposure period will be terminated and the orders will be executed pursuant to (b) above.

(d) If after an order is exposed, the order cannot be executed in full on the Exchange at the then-current NBBO or better, and it is marketable, the lesser of the full displayed size of the Protected Bid(s) or Protected Offer(s) that are priced better than the Nasdaq ISE's quote or the balance of the order will be sent to NES (as defined in Options 5, Section 4) and any additional balance of the order will be executed on the Nasdaq ISE if it is marketable. Any additional balance of the order that is not marketable against the then-current NBBO will be placed on the Nasdaq ISE book.

(e) If after a an order that is marked "do-not-route" is exposed, the order cannot be executed in full on the Exchange at the then-current NBBO or better (i) the balance of the order will be placed on the Nasdaq ISE book if it is not marketable against the then-current NBBO, or (ii) the balance of the order will be canceled.

(f) A pattern or practice of submitting orders that cause an exposure period to conclude early for purposes of Options 3, Section 22 will be deemed conduct inconsistent with just and equitable principles of trade and a violation of Options 9, Section 1 and other Exchange Rules.

.04 Non-Customer Order(s), as defined in Options 1, Section 1(a)(25), may opt out of being processed in accordance with Supplementary Material .02 of this Options 5, Section 2. Such order(s) will be processed as follows:

(a) When the automatic execution of an incoming Non-Customer Order would result in an impermissible Trade Through, and it is marketable, the lesser of the full displayed size of the Protected Bid(s) or Protected Offer(s) that are priced better than the Nasdaq ISE's quote or the balance of the order will be sent to NES (as defined in Options 5, Section 4) and any additional balance of the order will be executed on the Nasdaq ISE if it is marketable. Any additional balance of the order that is not marketable against the then-current NBBO will be placed on the Nasdaq ISE book.

(b) If an order is marked "do-not-route" and the order cannot be executed in full on the Exchange at the then current NBBO or better (i) the balance of the order will be placed on the Nasdaq ISE book if it is not marketable against the then current NBBO, or (ii) the balance of the order will be cancelled.

.05 Sweep Order(s), as defined in Options 3, Section 7(s), will not be processed in accordance with Supplementary Material .02 of this Options 5, Section 2. Such order(s) will be processed as follows:

(a) When the automatic execution of an incoming Sweep Order would result in an impermissible Trade Through, and it is marketable, the lesser of the full displayed size of the Protected Bid(s) or Protected Offer(s) that are priced better than the Nasdaq ISE's quote or the balance of the order will be sent to NES and any additional balance of the order will be executed on the Nasdaq ISE if it is marketable. Any portion of the order not executed shall be canceled.

(b) If a Sweep Order is not marketable when it is submitted to the Exchange, it shall be canceled.

.06 In addressing Public Customer Orders that are not automatically executed because there is a displayed bid or offer on another exchange trading the same options contract that is better than the best bid or offer on the Exchange pursuant to the Supplementary Material of this Options 5, Section 2, the Exchange will act in compliance with these Rules and with the provisions of the Exchange Act and the rules thereunder, including, but not limited to, the requirements in Section (6)(b)(4) and (5) of the Exchange Act that the rules of national securities exchange provide for the equitable allocation of reasonable dues, fees, and other charges among its Members and issuers and other persons using its facilities, and not be designed to permit unfair discrimination between customers, issuers, brokers, or dealers.

.07 All orders entered on the Exchange and routed to another exchange via an ISO pursuant to the Supplementary Material of this Options 5, Section 2 that result in an execution shall be binding on the Member that entered such orders.

Adopted June 6, 2019 (SR-ISE-2019-17); amended September 17, 2019 (SR-ISE-2019-023), operative October 17, 2019; amended Dec. 9, 2019 (SR-ISE-2019-32); amended Feb. 18, 2021 (SR-ISE-2021-01), operative Mar. 20, 2021; amended Feb. 28, 2023 (SR-GEMX-2023-04), operative Mar. 30, 2023; amended May 17, 2023 (SR-ISE-2023-10), operative Jun. 16, 2023.

Changes to this rule have been approved, but not implemented. For more information, see the attached document.

(a) Prohibition. Except for quotations that fall within the provisions of paragraph (b) of this Rule, Members shall reasonably avoid displaying, and shall not engage in a pattern or practice of displaying, any quotations that lock or cross a Protected Quotation.

(b) Exceptions.

(1) The locking or crossing quotation was displayed at a time when the Exchange was experiencing a failure, material delay, or malfunction of its systems or equipment;

(2) The locking or crossing quotation was displayed at a time when there is a Crossed Market;

(3) The Member simultaneously routed an ISO to execute against the full displayed size of any locked or crossed Protected Bid or Protected Offer;

(4) With respect to a locking quotation, the order entered on the Exchange that will lock a Protected Bid or Protected Offer, is:

(A) not a Customer order, and the Exchange can determine via identification available pursuant to the OPRA Plan that such Protected Bid or Protected Offer does not represent, in whole or in part, a Customer order; or

(B) a Customer order, and the Exchange can determine via identification available pursuant to the OPRA Plan that such Protected Bid or Protected Offer does not represent, in whole or in part, a Customer order, and, on a case-by-case basis, the Customer specifically authorizes the Member to lock such Protected Bid or Protected Offer.

Supplementary Material to Options 5, Section 3

.01 When the price of an incoming limit order that is not executable upon entry would lock or cross a Protected Quotation, such order shall be handled in accordance with the provisions of Supplementary Material .02, .04 or .05 to Options 5, Section 2, as applicable.

Adopted June 6, 2019 (SR-ISE-2019-17); amended Feb. 28, 2023 (SR-GEMX-2023-04), operative Mar. 30, 2023; amended May 17, 2023 (SR-ISE-2023-10), operative Jun. 16, 2023.

Changes to this rule have been approved, but not implemented. For more information, see the attached document.

The Exchange may automatically route ISOs to other exchanges under certain circumstances, including pursuant to Supplementary Material .02 to Options 5, Section 2 ("Routing Services"). In connection with such services, the following shall apply:

(a) The Exchange shall route orders in options via Nasdaq Execution Services, LLC ("NES"), a broker-dealer that is a Member of an unaffiliated SRO which is the designated examining authority for the broker-dealer. NES serves as the Routing Facility of the Exchange (the "Routing Facility"). The sole use of the Routing Facility by the System will be to route orders in options listed and open for trading on the System to away markets either directly or through one or more third-party unaffiliated routing broker-dealers pursuant to Exchange Rules on behalf of the Exchange. The Routing Facility is subject to regulation as a facility of the Exchange, including the requirement to file proposed rule changes under Section 19 of the Securities Exchange Act of 1934, as amended.

(b) Use of NES to route orders to other market centers is optional. Parties that do not desire to use NES must designate orders as Do-Not-Route-Orders as described in Options 3, Section 7(m).

(c) The Exchange shall establish and maintain procedures and internal controls reasonably designed to adequately restrict the flow of confidential and proprietary information between the Exchange and the Routing Facility, and any other entity, including any affiliate of the Routing Facility; or, where there is a routing broker, the Exchange, the Routing Facility and any routing broker, and any other entity, including any affiliate of the routing broker (and if the routing broker or any of its affiliates engages in any other business activities other than providing routing services to the Exchange, between the segment of the routing broker or affiliate that provides the other business activities and the segment of the routing broker that provides the routing services).

(1) The books, records, premises, officers, directors, agents, and employees of the Routing Facility, as a facility of the Exchange, shall be deemed to be the books, records, premises, officers, directors, agents, and employees of the Exchange for purposes of and subject to oversight pursuant to the Act. The books and records of the Routing Facility, as a facility of the Exchange, shall be subject at all times to inspection and copying by the Exchange and the Commission.

(2) The Exchange and NES may not use a routing broker for which the Exchange or any affiliate of the Exchange is the designated examining authority.

(d) Market Access. In addition to the Exchange Rules regarding routing to away trading centers, NES as defined above, has, pursuant to Rule 15c3-5 under the Act, implemented certain tests designed to mitigate risks associated with providing the Exchange's Members with access to such away trading centers. Pursuant to the policies and procedures developed by NES to comply with Rule 15c3-5, if an order or series of orders are deemed to be violative of applicable pre-trade requirements of Rule 15c3-5, the order will be rejected prior to routing and/or NES will seek to cancel any orders that have been routed.

(e) The Exchange will determine the logic that provides when, how, and where orders are routed away to other exchanges. Except as provided in subparagraph (d) above, the routing broker(s) cannot change the terms of an order or the routing instructions, nor does the routing broker have any discretion about where to route an order.

(f) Entering Members whose orders are routed to away markets shall be obligated to honor such trades that are executed on away markets to the same extent they would be obligated to honor a trade executed on the Exchange.

Supplementary Material to Options 5, Section 4

.01 Options 5, Section 4 does not prohibit NES or third-party unaffiliated routing broker-dealers used by NES from designating a preferred market-maker at the other exchange to which the order is being routed pursuant to Options 5, Section 4.

.02 In the event that NES cannot provide Routing Services, the Exchange will cancel orders that, if processed by the Exchange, would violate Options 5, Section 1 (prohibition on trade-throughs) or Options 5, Section 3 (prohibition on locked and crossed markets).

.03 Rule 1004 of Regulation SCI under the Exchange Act requires the establishment of standards for the designation of those Members the Exchange reasonably determines are, taken as a whole, the minimum necessary for the maintenance of a fair and orderly market should the Exchange's business continuity and disaster recovery plans be activated. Rule 1004 also requires the Exchange to designate Members pursuant to those standards and require participation by such Designated Members in scheduled functional and performance testing of the operation of such plans, in the manner and frequency specified by the Exchange, provided that such frequency shall not be less than once every 12 months. Therefore, in accordance with Rule 1004 of Regulation SCI under the Exchange Act, NES has been designated by the Exchange as necessary for the maintenance of a fair and orderly market should the Exchange's business continuity and disaster recovery plans be activated. As the result of such designation, NES is required to participate in functional and performance testing of such plans at least once every 12 months.

Adopted June 6, 2019 (SR-ISE-2019-17); amended Feb. 28, 2023 (SR-GEMX-2023-04), operative Mar. 30, 2023; amended May 17, 2023 (SR-ISE-2023-10), operative Jun. 16, 2023.

(a) The Exchange or NES may cancel orders as either deems to be necessary to maintain fair and orderly markets if a technical or systems issue occurs at the Exchange, NES, or a routing destination. The Exchange or NES shall provide notice of the cancellation to affected Members as soon as practicable.

(b) NES shall maintain an error account for the purpose of addressing positions that result from a technical or systems issue at NES, the Exchange, a routing destination, or a non-affiliate third-party Routing Broker that affects one or more orders ("error positions").

(1) For purposes of this Rule an error position shall not include any position that results from an order submitted by a Member to the Exchange that is executed on the Exchange and automatically processed for clearance and settlement on a locked-in basis.

(2) Except as provided in Options 5, Section 5(b)(3), NES shall not (i) accept any positions in its error account from an account of a Member, or (ii) permit any Member to transfer any positions from the Member's account to NES' error account.

(3) If a technical or systems issue results in the Exchange not having valid clearing instructions for a Member to a trade, NES may assume that Member's side of the trade so that the trade can be automatically processed for clearance and settlement on a locked-in basis.

(c) In connection with a particular technical or systems issue, NES or the Exchange shall either (1) assign all resulting error positions to Members in accordance with subparagraph (A) below, or (2) have all resulting error positions liquidated in accordance with subparagraph (B) below. Any determination to assign or liquidate error positions, as well as any resulting assignments, shall be made in a nondiscriminatory fashion.

(A) NES or the Exchange shall assign all error positions resulting from a particular technical or systems issue to the Members affected by that technical or systems issue if NES or the Exchange:

(i) determines that it has accurate and sufficient information (including valid clearing information) to assign the positions to all of the Members affected by that technical or systems issue;

(ii) determines that it has sufficient time pursuant to normal clearance and settlement deadlines to evaluate the information necessary to assign the positions to all of the Members affected by that technical or systems issue; and

(iii) has not determined to cancel all orders affected by that technical or systems issue in accordance with Options 5, Section 5(a).

(B) If NES or the Exchange is unable to assign all error positions resulting from a particular technical or systems issue to all of the affected Members in accordance with subparagraph (A) above, or if NES or the Exchange determines to cancel all orders affected by the technical or systems issue in accordance with Options 5, Section 5(a), then NES shall liquidate the error positions as soon as practicable. NES shall:

(i) provide complete time and price discretion for the trading to liquidate the error positions to a third-party broker-dealer and shall not attempt to exercise any influence or control over the timing or methods of such trading; and

(ii) establish and enforce policies and procedures that are reasonably designed to restrict the flow of confidential and proprietary information between the third-party broker-dealer and NES/the Exchange associated with the liquidation of the error positions.

(d) NES and the Exchange shall make and keep records to document all determinations to treat positions as error positions and all determinations for the assignment of error positions to Members or the liquidation of error positions, as well as records associated with the liquidation of error positions through the third-party broker-dealer.

[Adopted June 6, 2019 (SR-ISE-2019-17).]