Stem executive RSU vesting and tax share sale

STEM, INC. executive Michael James Carlson, President, Managed Services, reported routine equity compensation activity.

Rhea-AI Filing Summary

STEM, INC. executive Michael James Carlson, President, Managed Services, reported routine equity compensation activity. On March 7, 2026, 3,541 RSUs vested and converted into the same number of common shares at $0.00 per share, the second installment from a 10,625 RSU grant dated May 28, 2024.

On March 10, 2026, 2,079 common shares were automatically sold at $11.12 per share to cover the related tax liability, a non-discretionary “sell to cover” transaction. Following these events, Carlson directly holds 19,458 common shares and 3,516 RSUs.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Carlson Michael James

Role President, Managed Services

Sold 2,079 shs ($23K)

Approx. gross sale proceeds $23K

Approx. exercise cost $0.00

Type	Security	Shares	Price	Value
Sale	Common Stock, Par Value $0.0001 Per Share	2,079	$11.12	$23K
Exercise	Restricted Stock Unit	3,541	$0.00	$0.00
Exercise	Common Stock, Par Value $0.0001 Per Share	3,541	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 3,516 contracts (Direct); Common Stock, Par Value $0.0001 Per Share — 19,458 shares (Direct)

Footnotes (3)

1. F1. Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.
2. F2. Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of restricted stock units on March 7, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.
3. F3. On May 28, 2024, the reporting person was granted 10,625 RSUs vesting in three near equal annual installments, the second of which vested on March 7, 2026.

FAQ

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What insider transactions did STEM (STEM) report for Michael James Carlson?

STEM reported RSU vesting and a related tax sale for Michael James Carlson. 3,541 RSUs vested into common shares, and 2,079 shares were automatically sold to cover taxes, reflecting routine equity compensation activity rather than a discretionary open-market trade.

How many STEM (STEM) shares did Michael James Carlson sell and at what price?

Michael James Carlson had 2,079 STEM common shares sold at $11.12 per share. The footnote explains this was an automatic “sell to cover” transaction to satisfy tax obligations from RSU settlement, not a discretionary decision to sell shares in the open market.

What RSU vesting occurred for STEM (STEM) executive Michael James Carlson?

On March 7, 2026, 3,541 RSUs held by Michael James Carlson vested and converted into an equal number of STEM common shares at $0.00 per share. This vesting represented the second installment from a 10,625 RSU grant awarded to him on May 28, 2024.

How many STEM (STEM) shares and RSUs does Michael James Carlson hold after these transactions?

After the reported transactions, Michael James Carlson directly holds 19,458 shares of STEM common stock and 3,516 restricted stock units. These figures reflect the RSU vesting on March 7, 2026 and the subsequent automatic sale of 2,079 shares to cover associated tax liabilities.

Was the STEM (STEM) share sale by Michael James Carlson discretionary?

The filing states the 2,079-share sale was not discretionary. It was an automatic “sell to cover” trade executed to pay Michael James Carlson’s tax liability arising from RSU settlement, indicating a mechanical transaction tied to compensation rather than an active portfolio decision.

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

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Accepted by SEC EDGAR 03/10/2026 - 05:12 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).

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^*

Carlson Michael James

(Last) (First) (Middle)

1400 POST OAK BOULEVARD

SUITE 560

(Street)

HOUSTON TX 77056

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
STEM, INC. [ STEM ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, Managed Services

3. Date of Earliest Transaction (Month/Day/Year)
03/07/2026

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

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

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

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, Par Value $0.0001 Per Share	03/07/2026		M		3,541	A	(1)	21,537	D
Common Stock, Par Value $0.0001 Per Share	03/10/2026		S(2)		2,079	D	$11.12	19,458	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
Restricted Stock Unit	(1)	03/07/2026		M			3,541	(3)	(3)	Common Stock, Par Value $0.0001 Per Share	3,541	$0	3,516	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

2. Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of restricted stock units on March 7, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

3. On May 28, 2024, the reporting person was granted 10,625 RSUs vesting in three near equal annual installments, the second of which vested on March 7, 2026.

Remarks:

	/s/ Sarah Dunn, attorney-in-fact	03/10/2026
	** 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.