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CIK 0001758766 · Non-accelerated filer<br>Smaller reporting company

Ticker
STEM
Exchange
NYSE
Industry
Services-Computer Integrated Systems Design
FY end
Dec 31
Entity type
operating
EIN
264466193
Phone
877-374-7836
Business address
1400 POST OAK BOULEVARD, SUITE 560, HOUSTON, TX, 77056
Former names
Star Peak Energy Transition Corp., Star Peak Energy Acquisition Corp.
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$682
in 1 filing

Net −$682. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Carlson Michael James −$682 President, Managed Services sold <1% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-09-29 Carlson Michael James President, Managed Services Sale −146 $4.67 $682 26,020
2026-09-26 Carlson Michael James President, Managed Services Option exercise +305 $4.48 $1K 26,166
2026-09-26 Carlson Michael James President, Managed Services Option exercise · Restricted Stock Unit −305 0
2026-08-07 Guruswamy Vasudevan Director Option exercise +7,486 10,597
2026-08-07 Guruswamy Vasudevan Director Option exercise · Restricted Stock Unit −7,486 0
2026-08-07 Tammineedi Anil Director Option exercise +7,486 15,473
2026-08-07 Tammineedi Anil Director Option exercise · Restricted Stock Unit −7,486 0
2026-08-07 Daley Adam Director Option exercise +7,486 19,535
2026-08-07 Daley Adam Director Option exercise · Restricted Stock Unit −7,486 0
2026-08-07 Shivram Krishna Director Option exercise +7,486 10,597
2026-08-07 Shivram Krishna Director Option exercise · Restricted Stock Unit −7,486 0
2026-08-07 Birns Ira M Director Option exercise +7,486 14,207
2026-08-07 Birns Ira M Director Option exercise · Restricted Stock Unit −7,486 0
2026-08-07 BUZBY DAVID S Director Option exercise +7,486 7,486
2026-08-07 BUZBY DAVID S Director Option exercise · Restricted Stock Unit −7,486 0
2026-08-07 TYSON LAURA D Director Grant or award +7,486 15,473
2026-08-07 TYSON LAURA D Director Option exercise · Restricted Stock Unit −7,486 0
2026-07-20 Musfeldt Brian Chief Financial Officer Sale −996 $6.11 $6K 2,379
2026-07-17 Musfeldt Brian Chief Financial Officer Option exercise +3,375 $6.26 $21K 3,375
2026-07-17 Musfeldt Brian Chief Financial Officer Option exercise · Performance Stock Unit −3,375 3,375

Page 1 of 12 · 222 trades