Core Scientific's Todd M. Duchene sells 10,000 shares

The reported sales were made under a Rule 10b5-1 plan adopted December 5, 2025; 700,000 shares were also held through a grantor retained annuity trust.

Rhea-AI Filing Summary

Core Scientific, Inc. (CORZ) Chief Legal and Administrative Officer Todd M. Duchene reported two direct sales of common stock on October 26, 2026: 4,500 shares at a weighted average price of $13.2653, with sale prices ranging from $12.71 to $13.70, and 5,500 shares at a weighted average price of $13.8000, with sale prices ranging from $13.71 to $13.91. Both sales were made under a Rule 10b5-1 trading plan adopted December 5, 2025. Duchene also reported 700,000 shares held indirectly by a grantor retained annuity trust of which he is sole trustee.

Insider Trade Summary 10b5-1

Net Seller: 10,000 shares

Net Sell 3 txns

Insider DUCHENE TODD M

Role See remarks

Sold 10,000 shs ($136K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	4,500	$13.2653	$60K
Sale	Common Stock F1, F3	5,500	$13.80	$76K
holding	Common Stock F4	--	--	--

Holdings After Transaction: Common Stock — 1,133,286 shares (Direct); Common Stock — 700,000 shares (Indirect, By GRAT)

Footnotes (4)

1. F1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 5, 2025.
2. F2. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.71 to $13.70, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.
3. F3. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.71 to $13.91, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.
4. F4. Represents shares held by a grantor retained annuity trust of which the Reporting Person is the sole trustee.

Key Figures

Common shares sold: 4,500 shares Weighted average price: $13.2653 per share Sale price range: $12.71–$13.70 per share +4 more

7 metrics

Common shares sold 4,500 shares Direct sale on October 26, 2026

Weighted average price $13.2653 per share 4,500-share sale on October 26, 2026

Sale price range $12.71–$13.70 per share Prices for the 4,500 shares sold

Common shares sold 5,500 shares Direct sale on October 26, 2026

Weighted average price $13.8000 per share 5,500-share sale on October 26, 2026

Sale price range $13.71–$13.91 per share Prices for the 5,500 shares sold

Shares held through grantor retained annuity trust 700,000 shares Indirect holdings; Duchene is sole trustee

Key Terms

Rule 10b5-1 trading plan, weighted average price, grantor retained annuity trust

3 terms

Rule 10b5-1 trading plan regulatory

"effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

grantor retained annuity trust financial

"held by a grantor retained annuity trust"

A grantor retained annuity trust (GRAT) is an estate-planning tool where the person who creates the trust transfers assets into it but receives fixed cash payments (an annuity) from the trust for a set number of years; whatever remains after that term passes to designated beneficiaries. It matters to investors because it can shift future appreciation of assets out of the creator’s taxable estate—like putting an asset into a timed vending machine that pays you fixed amounts while any extra value that grows inside the machine goes to heirs with reduced gift or estate tax consequences.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What CORZ stock sales did Todd M. Duchene report?

Todd M. Duchene reported sales of 4,500 shares at a weighted average price of $13.2653 and 5,500 shares at a weighted average price of $13.8000 on October 26, 2026. Both sales were made under a Rule 10b5-1 trading plan adopted December 5, 2025.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/28/2026 - 04:19 PM EDT Accepted by SEC EDGAR 10/28/2026 - 04:18 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

DUCHENE TODD M

(Last) (First) (Middle)

C/O CORE SCIENTIFIC, INC.

838 WALKER ROAD, SUITE 21-2105

(Street)

DOVER DELAWARE 19904

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Core Scientific, Inc./tx [ CORZ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See remarks

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/26/2026		S(1)		4,500	D	$13.2653(2)	1,138,786	D
Common Stock	10/26/2026		S(1)		5,500	D	$13.8(3)	1,133,286	D
Common Stock								700,000	I	By GRAT(4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 5, 2025.

2. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.71 to $13.70, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

3. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.71 to $13.91, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

4. Represents shares held by a grantor retained annuity trust of which the Reporting Person is the sole trustee.

Remarks:

Chief Legal and Administrative Officer

	/s/ Todd DuChene	10/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)