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Insider · CIK 0001244203

David S Buzby

officerdirector

Files at STEM (STEM, INC.), SVII (Spring Valley Acquisition Corp. II). First filing -, latest -.

In brief

David S Buzby files SEC Form 4 as officer and director at STEM (STEM, INC.), and also at SVII (Spring Valley Acquisition Corp. II). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.

A track record needs three past buys with six months of prices behind them; David S Buzby has 0, so none is measured yet.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 0
$0 bought, $0 sold

Signals

This insider’s open-market buys and sells, scored.

No scored open-market trades yet.

Transactions

Every row this insider has filed, 10 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Aug 7, 2026STEM
STEM, INC.
MOption exercise
Common Stock, Par Value $0.0001 Per Share
+7,486--7,486Aug 11, 2026
Aug 7, 2026STEM
STEM, INC.
MOption exercise
Restricted Stock Unitderivative
-7,486$0.00$00Aug 11, 2026
Jun 3, 2026STEM
STEM, INC.
AGrant or award
Restricted Stock Unitderivative
+12,168$0.00$012,168Jun 4, 2026
Feb 24, 2026SVII
Spring Valley Acquisition Corp. II
DDisposition to issuer
Class A ordinary shares
-40,000--0Feb 26, 2026
Jul 3, 2025STEM
STEM, INC.
GGift
Common Stock, Par Value $0.0001 Per Share
-5,511$0.00$0478Jul 8, 2025
Jul 3, 2025STEM
STEM, INC.
GGift
Common Stock, Par Value $0.0001 Per Shareindirect: By the David S. Buzby Revocable Trust
+5,511$0.00$037,571Jul 8, 2025
Jun 4, 2025STEM
STEM, INC.
AGrant or award
Restricted Stock Unitderivative
+149,723$0.00$0149,723Jun 6, 2025
May 29, 2025STEM
STEM, INC.
MOption exercise
Common Stock, Par Value $0.0001 Per Share
+110,236$0.00$0230,025Jun 2, 2025
May 29, 2025STEM
STEM, INC.
MOption exercise
Restricted Stock Unitderivative
-110,236$0.00$00Jun 2, 2025
Jan 14, 2025STEM
STEM, INC.
AGrant or award
Stock Option (Right to Buy)derivative
+66,667$0.00$066,667Jan 16, 2025

Questions about David S Buzby

Answered from the filings on this page, as of the latest one.

Is David S Buzby buying or selling?

David S Buzby has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.

How did David S Buzby's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and David S Buzby has 0.

Where does David S Buzby file Form 4?

David S Buzby has filed Form 4 at STEM (STEM, INC.) as See Remarks; SVII (Spring Valley Acquisition Corp. II). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

David S Buzby: insider trades and track record | InsiderTell