sro10-20221231.htm

As filed with the Securities and Exchange Commission on January 31, 2026

THIS DOCUMENT IS A TECHNICAL ILLUSTRATION OF HOW CERTAIN DISCLOSURES IN SEC FILINGS ARE TO BE TAGGED. IT DOES NOT INDICATE WHICH PARTICULAR DISCLOSURES MUST BE INCLUDED AND/OR TAGGED IN COMMISSION FILINGS, AND IT DOES NOT CONSTITUTE LEGAL GUIDANCE OF ANY SORT.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Form CA-1 Schedule A

CA-TST-000 (DEF, LLC)

(name of registrant)

100 F St. NE

Washington, DC 20549

4.	Arrangements with Other Persons
	Does registrant have any arrangement with any other person under which, with respect to registrant’s clearing agency activities, such other person processes, keeps, transmits or maintains any securities, funds, records or accounts of registrant or registrant’s participants relating to clearing agency activities?	Yes

	DEF, LLC has an arrangement with Bank C Corporation, its clearing bank, to make settlements on Bank C’s books. Bank C Corporation is headquartered at 456 Main St., Anytown, USA 10000.
	Clearing Agency DEF also has a one pot cross-margining arrangement with Derivatives Clearing Organization D. Derivatives Clearing Organization D is headquartered at 789 Main St., Anytown, USA 10000.

	5.		Insurance Information

(a)		With respect to clearing agency activities, please provide the following information regarding the type of insurance carried or provided:

			Type of Insurance			Amount of Coverage		Amount of Deductible

		1.	Blanket Bond	Yes	$	10,000,000	$	1,000,000
		2.	Fidelity	No
		3.	Errors and Omissions	Yes	$	5,000,000	$	500,000
		4.	Mail Policy	No
		5.	Air Courier	No
		6.	Lost Instrument	No
		7.	Other (specify) General Comprehensive	Yes		1,000,000		50,000

(b)		If any of registrant’s clearing activities are not covered by insurance, has provision been made for self-insurance?	Yes

		DEF, LLC has made provisions for self-insurance through an accounting reserve of $20,000,000.

(c)		As a result of registrant’s clearing agency activities, is registrant exposed to loss if a participant fails to perform its obligations to the clearing agency, any other participant or any other person?	Yes

		Clearing Agency DEF guarantees the trades at two of its large broker-dealer members, so it is exposed to potential loss if these broker-dealers become insolvent. If that occurs, and if the resulting loss is not covered by the insolvent broker-dealers’ clearing funds, Clearing Agency DEF may need to invoke its loss allocation process.

(d)		Does the registrant maintain a clearing or participants’ fund, mark to the market open obligations involving the purchase or sale of securities or otherwise require participants to protect registrant against losses to which it may be exposed as a result of a participant’s failure to perform its obligations to the clearing agency, any other participant or any other person?	Yes

		Clearing Agency DEF maintains strict membership standards, including minimum financial requirements, to ensure that all members are able to meet their financial commitments. Clearing Agency DEF also maintains a clearing fund to provide readily accessible resources to enable settlement and reduce costs related to a member’s insolvency or failure to fulfill contractual obligations.

	6.	Audit Information

(a)		Is registrant audited by an independent accountant?	Yes

(b)		If registrant is audited by an independent accountant, does the audit include a review of internal controls related to clearing agency activities?	Yes

(c)		Fiscal year-end of registrant: 31/12

	7.	Policies and Procedures

		Describe the registrant’s internal policies and procedures for reconciling differences (including long and short stock record differences and dividend differences) in its clearing agency activities

		Upon trade execution, Clearing Agency DEF members submit all mandatory trade details to the central system to be matched with the trade details submitted by their counterparties. Prior to comparison, a member may unilaterally cancel trade data submitted in error. Once a trade has been compared, it may be canceled only by matching instructions from both parties. A trade compared by Clearing Agency DEF constitutes a valid and binding contract, and Clearing Agency DEF guarantees settlement of that trade.

	8.	Other

(a)		How many employees does registrant have engaged in clearing agency activities? 2,000

(b)		How many years has registrant performed clearing agency activities? 3

	9.	Other Regulatory

		Are registrant’s clearing agency activities subject to regulation by any Federal agency other than the Commission or by any state or political subdivision?	Yes

		Clearing Agency DEF’s clearing agency activities are subject to regulation by the Federal Reserve Board and the State of Illinois.

		Have the registrant’s clearing agency activities been the subject of periodic examinations by any Federal agency other than the Commission or by any state or political subdivision?	Yes

		Clearing Agency DEF’s clearing agency activities have been the subject of periodic examinations by the Office of the Comptroller of the Currency and the State of Texas.