Core Scientific officer sells 10,000 shares in 10b5-1 plan

Core Scientific, Inc. (CORZ) Chief Legal and Administrative Officer Todd M. Duchene reported selling a total of 10,000 shares of common stock on July 27, 2026, in three transactions reported as open-market or private sales.

Rhea-AI Filing Summary

Core Scientific, Inc. (CORZ) Chief Legal and Administrative Officer Todd M. Duchene reported selling a total of 10,000 shares of common stock on July 27, 2026, in three transactions reported as open-market or private sales.

The sales comprised 8,300 shares at $20.7469, 1,600 shares at $21.8925, and 100 shares at $22.4900 per share. The 8,300‑ and 1,600‑share trades were executed at weighted average prices within ranges of $20.47–$21.42 and $21.47–$22.44, respectively. All transactions were effected under a Rule 10b5-1 trading plan adopted on December 5, 2025.

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 ($209K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	8,300	$20.7469	$172K
Sale	Common Stock F1, F3	1,600	$21.8925	$35K
Sale	Common Stock F1	100	$22.49	$2K

Holdings After Transaction: Common Stock — 1,989,101 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 $20.47 to $21.42, 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. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.47 to $22.44, 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.

Key Figures

Total shares sold: 10,000 shares First block sold: 8,300 shares at $20.7469 per share Second block sold: 1,600 shares at $21.8925 per share +4 more

7 metrics

Total shares sold 10,000 shares Aggregate common stock sold by Todd M. Duchene on July 27, 2026

First block sold 8,300 shares at $20.7469 per share Common stock sale reported as weighted average within $20.47–$21.42 range

Second block sold 1,600 shares at $21.8925 per share Common stock sale reported as weighted average within $21.47–$22.44 range

Third block sold 100 shares at $22.4900 per share Common stock sale on July 27, 2026 reported at a single per-share price

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

First trade price range $20.47–$21.42 Range of individual execution prices for the 8,300-share weighted-average sale

Second trade price range $21.47–$22.44 Range of individual execution prices for the 1,600-share weighted-average sale

Key Terms

Rule 10b5-1 trading plan, weighted average price, open market or private transaction

3 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 transactions"

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.

open market or private transaction regulatory

"transaction code description states: Sale in open market or private transaction"

FAQ

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

Who is the insider trading Core Scientific (CORZ) shares in this Form 4?

The Form 4 reports transactions by Todd M. Duchene, Chief Legal and Administrative Officer of Core Scientific, Inc., involving sales of the company’s common stock executed on July 27, 2026 under a Rule 10b5-1 trading plan.

How many Core Scientific (CORZ) shares did Todd M. Duchene sell?

Todd M. Duchene reported selling a total of 10,000 shares of Core Scientific common stock. The sales occurred in three separate transactions on July 27, 2026, as disclosed in the Form 4 insider trading report.

At what prices were the Core Scientific (CORZ) shares sold in this filing?

The reported sales occurred at per-share prices of $20.7469, $21.8925, and $22.4900. The first two prices represent weighted average prices for multiple executions within ranges of $20.47–$21.42 and $21.47–$22.44, respectively.

Were the Core Scientific (CORZ) insider sales made under a Rule 10b5-1 plan?

Yes. The filing states that all reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by Todd M. Duchene on December 5, 2025, and the Rule 10b5-1 checkbox in the form is affirmed.

On what date did the insider transactions in Core Scientific (CORZ) occur?

All reported transactions took place on July 27, 2026. On that date, Todd M. Duchene executed three sales totaling 10,000 shares of Core Scientific common stock at the prices and ranges disclosed in the Form 4.

What do the price ranges in the Core Scientific (CORZ) Form 4 indicate?

The filing explains that some prices are weighted averages across multiple trades. For 8,300 shares, executions ranged from $20.47–$21.42, and for 1,600 shares from $21.47–$22.44, with detailed breakdowns available from the reporting person upon request.

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

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Available on EDGAR 07/29/2026 - 04:29 PM Accepted by SEC EDGAR 07/29/2026 - 04:29 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)
07/27/2026

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	07/27/2026		S(1)		8,300	D	$20.7469(2)	1,990,801	D
Common Stock	07/27/2026		S(1)		1,600	D	$21.8925(3)	1,989,201	D
Common Stock	07/27/2026		S(1)		100	D	$22.49	1,989,101	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 $20.47 to $21.42, 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. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.47 to $22.44, 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.

Remarks:

Chief Legal and Administrative Officer

	/s/ Todd DuChene	07/29/2026
	** 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)