Core Scientific (CORZ) legal chief sells 10,000 shares

Rhea-AI Filing Summary

Core Scientific, Inc. (CORZ) insider Todd M. Duchene, the Chief Legal and Administrative Officer, reported transactions in Common Stock on August 17, 2026. He sold 10,000 shares in an open-market or private transaction at a weighted average price of $20.0974 per share, with individual sale prices ranging from $19.74 to $20.42. In a separate transaction the same day, 11,205 shares of common stock were disposed of to satisfy withholding tax obligations upon the vesting of restricted stock units. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 5, 2025.

Insider Trade Summary 10b5-1

Net Seller: 21,205 shares

Net Sell 2 txns

Insider DUCHENE TODD M

Role See remarks

Sold 10,000 shs ($201K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	10,000	$20.0974	$201K
Tax Withholding	Common Stock F3	11,205	$20.13	$226K

Holdings After Transaction: Common Stock — 1,947,896 shares (Direct)

Footnotes (3)

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 $19.74 to $20.42, 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. Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units.

Key Figures

Shares sold: 10,000 shares Weighted average sale price: $20.0974 per share Price range of sale: $19.74 to $20.42 per share +2 more

5 metrics

Shares sold 10,000 shares Common Stock sale on August 17, 2026 by Todd M. Duchene

Weighted average sale price $20.0974 per share Weighted average price for 10,000-share sale; prices ranged $19.74–$20.42

Price range of sale $19.74 to $20.42 per share Range of individual transaction prices for the 10,000-share sale

Shares withheld for taxes 11,205 shares Shares disposed to satisfy withholding tax on RSU vesting on August 17, 2026

Rule 10b5-1 plan adoption date December 5, 2025 Date Todd M. Duchene adopted the trading plan governing these transactions

Key Terms

Rule 10b5-1 trading plan, weighted average price, restricted stock units, withholding tax obligations

4 terms

Rule 10b5-1 trading plan regulatory

"transactions reported in this Form 4 were 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. These shares were sold in multiple"

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.

restricted stock units financial

"Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

withholding tax obligations financial

"Represents shares withheld to satisfy withholding tax obligations upon the vesting"

FAQ

What insider transaction did CORZ executive Todd M. Duchene report on this Form 4?

Todd M. Duchene reported selling 10,000 shares of Core Scientific common stock on August 17, 2026. The transaction was an open-market or private sale, accompanied by an additional share disposition to cover tax withholding on RSU vesting.

At what price did the CORZ shares sell in Todd M. Duchene’s August 17, 2026 transaction?

The reported weighted average price was $20.0974 per share for the 10,000 shares sold. Individual trades occurred in a price range from $19.74 to $20.42, and detailed breakdowns are available upon request to the company or regulators.

How many Core Scientific (CORZ) shares were used to satisfy tax withholding for Todd M. Duchene?

On August 17, 2026, 11,205 shares of Core Scientific common stock were withheld or delivered. These shares were used to satisfy withholding tax obligations arising from the vesting of restricted stock units held by Todd M. Duchene.

Was Todd M. Duchene’s CORZ stock sale made under a Rule 10b5-1 trading plan?

Yes. The filing states the transactions were effected under a Rule 10b5-1 trading plan. This plan was adopted on December 5, 2025, indicating the trades were pre-arranged rather than opportunistic responses to short-term market movements.

Does the Form 4 disclose Todd M. Duchene’s remaining CORZ share holdings after these transactions?

The reported transactions include 10,000 shares sold and 11,205 shares withheld for taxes, but the post-transaction holdings are not stated in the data provided. The total_shares_following_transaction fields are shown as null for both entries.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/19/2026 - 04:06 PM Accepted by SEC EDGAR 08/19/2026 - 04:05 PM 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)
08/17/2026

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	08/17/2026		S(1)		10,000	D	$20.0974(2)	1,959,101	D
Common Stock	08/17/2026		F(3)		11,205	D	$20.13	1,947,896	D

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 $19.74 to $20.42, 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. Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units.

Remarks:

Chief Legal and Administrative Officer

	/s/ Todd DuChene	08/19/2026
	** 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)