STOCK TITAN

STEM, INC. (STEM) director exercises 7,486 RSUs into common shares and updates holdings

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

STEM, INC. director David S. Buzby reported the vesting and conversion of 7,486 Restricted Stock Units into an equal number of shares of common stock on August 7, 2026. The RSUs had been granted on June 4, 2025 and vested 100% on that date. Following this exercise-and-conversion, he holds 7,486 shares of common stock directly, plus 38,745 shares indirectly through the 2016 David S. Buzby Revocable Trust and 4,815 shares indirectly through the David Buzby Roth IRA.

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Insider BUZBY DAVID S
Role Director
Type Security Shares Price Value
Exercise Restricted Stock Unit F1, F3 7,486 $0.00 $0.00
Exercise Common Stock, Par Value $0.0001 Per Share F1 7,486 -- --
holding Common Stock, Par Value $0.0001 Per Share F2 -- -- --
holding Common Stock, Par Value $0.0001 Per Share -- -- --
Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct); Common Stock, Par Value $0.0001 Per Share — 7,486 shares (Direct); Common Stock, Par Value $0.0001 Per Share — 38,745 shares (Indirect, By the David S. Buzby Revocable Trust); Common Stock, Par Value $0.0001 Per Share — 4,815 shares (Indirect, By the David Buzby Roth IRA)
Footnotes (3)
  1. F1. Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.
  2. F2. Held by the 2016 David S. Buzby Revocable Trust, of which the reporting person is sole trustee.
  3. F3. On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.
RSUs converted 7,486 units Restricted Stock Units converted into common stock on August 7, 2026 at a one-for-one basis
Common shares acquired 7,486 shares Shares of common stock received from RSU conversion on August 7, 2026
Direct holdings after transaction 7,486 shares Common stock directly owned by David S. Buzby following the RSU conversion
Trust indirect holdings 38,745 shares Common stock held by the 2016 David S. Buzby Revocable Trust
Roth IRA indirect holdings 4,815 shares Common stock held by the David Buzby Roth IRA
RSU grant date June 4, 2025 Grant date of the 7,486 RSUs that vested and converted
RSU vesting date August 7, 2026 Date when the 7,486 RSUs vested 100% and converted into common stock
Restricted Stock Unit financial
"Each restricted stock unit ("RSU") converted into a share of common stock"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
Revocable Trust financial
"Held by the 2016 David S. Buzby Revocable Trust, of which the reporting person"
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
Roth IRA financial
"By the David Buzby Roth IRA"
A Roth IRA is a retirement savings account you fund with money that’s already been taxed, and withdrawals taken in retirement under the account rules are tax-free. It matters to investors because it shifts the tax bill to today instead of retirement, potentially increasing after-tax income later—think of it like paying for a lifetime subscription now so you can use it without extra charges in the future—helpful for long-term tax planning and flexibility.

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

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FAQ

What did STEM (STEM) director David S. Buzby report in this Form 4?

David S. Buzby reported the vesting and conversion of 7,486 RSUs into 7,486 shares of STEM common stock on August 7, 2026, moving the position from derivative to direct share ownership.

How many STEM (STEM) RSUs vested for David S. Buzby and on what terms?

Buzby had 7,486 Restricted Stock Units that converted into common stock on a one-for-one basis. These RSUs were granted on June 4, 2025 and vested 100% on August 7, 2026.

What is David S. Buzby’s direct STEM (STEM) share ownership after this transaction?

After the RSU conversion, Buzby directly owns 7,486 shares of STEM common stock. This reflects the new shares received from the RSU conversion reported in the Form 4.

What indirect STEM (STEM) holdings does David S. Buzby report?

Buzby reports 38,745 shares held indirectly through the 2016 David S. Buzby Revocable Trust and 4,815 shares held indirectly through the David Buzby Roth IRA, in addition to his direct holdings.

Were any STEM (STEM) shares sold in David S. Buzby’s reported transactions?

No sales were reported. The Form 4 shows an exercise and conversion of 7,486 RSUs into common shares, with no open-market purchases or sales disclosed in these transactions.

Does David S. Buzby still hold any STEM (STEM) RSUs after this Form 4?

The reported 7,486 RSUs converted fully into common stock, leaving 0 units in that specific RSU award. No remaining derivative position from this grant is shown in the reported data.
SEC Form 4
FORM 4UNITED 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*
BUZBY DAVID S

(Last)(First)(Middle)
1400 POST OAK BLVD
SUITE 560

(Street)
HOUSTON TEXAS 77056

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
STEM, INC. [ STEM ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/07/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock, Par Value $0.0001 Per Share08/07/2026M7,486A(1)7,486D
Common Stock, Par Value $0.0001 Per Share38,745IBy the David S. Buzby Revocable Trust(2)
Common Stock, Par Value $0.0001 Per Share4,815IBy the David Buzby Roth IRA
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Unit(1)08/07/2026M7,486 (3) (3)Common Stock, Par Value $0.0001 Per Share7,486$00D
Explanation of Responses:
1. Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.
2. Held by the 2016 David S. Buzby Revocable Trust, of which the reporting person is sole trustee.
3. On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.
Remarks:
/s/ Sarah Dunn, attorney-in-fact08/11/2026
** Signature of Reporting PersonDate
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)