STOCK TITAN

STEM, Inc. (NYSE: STEM) CFO exercises PSUs, sells 996 shares for taxes

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

STEM, INC. Chief Financial Officer Brian Musfeldt reported performance-based equity activity and a related tax sale. On July 17, 2026, he exercised 3,375 Performance Stock Units, receiving 3,375 shares of common stock at $6.26 per share from a 2025 grant after a performance metric was achieved. The PSUs vested when the stock’s volume-weighted average price met or exceeded $17.60 for a 60-trading-day period within a performance period ending June 30, 2028. On July 20, 2026, 996 shares were sold at $6.11 per share solely to cover tax liabilities arising from the PSU settlement; this sell-to-cover transaction was described as non-discretionary.

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Insider Musfeldt Brian
Role Chief Financial Officer
Sold 996 shs ($6K)
Approx. gross sale proceeds $6K
Type Security Shares Price Value
Sale Common Stock, Par Value $0.0001 Per Share F1 996 $6.11 $6K
Exercise Performance Stock Unit F2, F3 3,375 $0.00 $0.00
Exercise Common Stock, Par Value $0.0001 Per Share 3,375 $6.26 $21K
Holdings After Transaction: Performance Stock Unit — 3,375 shares (Direct); Common Stock, Par Value $0.0001 Per Share — 2,379 shares (Direct)
Footnotes (3)
  1. F1. Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on July 17, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.
  2. F2. Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").
  3. F3. On July 17, 2025, the Reporting Person was granted 6,750 PSUs, 3,375 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.
Shares sold for taxes 996 shares Automatic sell-to-cover transaction on July 20, 2026 at $6.11 per share
Sell-to-cover price $6.11 per share Price for 996 common shares sold to cover tax liability
PSUs exercised 3,375 units Performance Stock Units converted into 3,375 common shares on July 17, 2026
Share value on PSU settlement $6.26 per share Value used for 3,375 common shares received from PSU settlement
Original PSU grant 6,750 PSUs PSUs granted on July 17, 2025 to the CFO
Vested PSUs 3,375 PSUs Portion of grant that vested on June 30, 2026 after meeting performance metric
Performance metric VWAP $17.60 Volume-weighted average price threshold over any 60 trading days during performance period
Performance period end June 30, 2028 End of performance period for the PSU performance metric
Performance Stock Unit financial
"Each performance stock unit ("PSU") represented a contingent right to receive one share"
A performance stock unit is a type of reward companies give to employees, usually managers, that depends on how well the company performs over time. If the company hits specific goals, the employee earns shares of stock, like earning a prize for reaching certain levels in a game. It motivates employees to work hard because their rewards are tied to the company's success.
sell to cover financial
"Represents shares of common stock automatically sold to cover the reporting person's tax liability"
Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.
volume-weighted average price financial
"if the volume-weighted average price of the Issuer's common stock for any consecutive sixty"
Volume-weighted average price (VWAP) is the average price of a stock over a specific time period where each trade is weighted by the number of shares traded, so larger trades influence the average more than small ones. Investors and traders use VWAP as a reference point to judge whether trades are happening at relatively good or poor prices—like checking the average price paid for an item at a market where bulk purchases count more than single-item buys.
Performance Period financial
"during a performance period ending on June 30, 2028 (the "Performance Period")."
The performance period is the specific time span over which an investment’s results, an employee’s targets, or a fund’s returns are measured and judged. It matters to investors because the length and start/end of that window determine which gains or losses count toward performance fees, bonus payouts, or benchmark comparisons—much like timing a race decides who wins, the chosen period can change whether results look strong or weak.
contingent right financial
"Each performance stock unit ("PSU") represented a contingent right to receive one share"

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

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FAQ

What insider transactions did STEM (STEM) CFO Brian Musfeldt report?

Brian Musfeldt reported 3,375 PSUs exercised into 3,375 common shares on July 17, 2026, and a sale of 996 shares on July 20, 2026 to cover taxes from that PSU settlement.

How many STEM (STEM) shares did the CFO sell, and at what price?

The CFO reported selling 996 shares of common stock at $6.11 per share. Footnotes state the shares were automatically sold to cover tax liabilities tied to the PSU settlement, not as a discretionary trade.

What performance stock units did the STEM (STEM) CFO exercise?

He exercised 3,375 Performance Stock Units, converting them into 3,375 common shares at an effective price of $6.26 per share on July 17, 2026, following vesting of part of a 2025 PSU grant.

What performance conditions applied to the STEM (STEM) PSUs?

Each PSU gave a right to one share if the stock’s volume-weighted average price reached at least $17.60 for any consecutive 60 trading days during a performance period ending on June 30, 2028.

When were the STEM (STEM) PSUs granted and how many vested?

On July 17, 2025, the CFO was granted 6,750 PSUs. Footnotes state that 3,375 PSUs vested on June 30, 2026 after the company achieved the specified performance metric.

Was the STEM (STEM) CFO’s share sale under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox is not marked as a plan trade. Instead, the footnote explains the 996-share sale was an automatic, non-discretionary sell-to-cover for tax obligations.
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*
Musfeldt Brian

(Last)(First)(Middle)
1400 POST OAK BOULEVARD
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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/17/2026
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 Share07/17/2026M3,375A$6.263,375D
Common Stock, Par Value $0.0001 Per Share07/20/2026S(1)996D$6.112,379D
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
Performance Stock Unit(2)07/17/2026M3,375 (3) (3)Common Stock, Par Value $0.0001 Per Share3,375$03,375D
Explanation of Responses:
1. Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on July 17, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.
2. Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").
3. On July 17, 2025, the Reporting Person was granted 6,750 PSUs, 3,375 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.
Remarks:
/s/ Sarah Dunn, attorney-in-fact07/21/2026
** 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)