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Insider · CIK 0001379941

Howard Lee

director

Files at AMPH (Amphastar Pharmaceuticals, Inc.). First filing -, latest -.

Howard Lee files SEC Form 4 as director at AMPH (Amphastar Pharmaceuticals, Inc.). 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; Howard Lee 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, 6 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Jun 1, 2026AMPH
Amphastar Pharmaceuticals, Inc.
AGrant or award
Common Stock
+8,143$0.00$0160,119Jun 3, 2026
Jun 2, 2026AMPH
Amphastar Pharmaceuticals, Inc.
FTax withholding
Common Stock
-769$18.45$14k159,350Jun 3, 2026
Jun 1, 2026AMPH
Amphastar Pharmaceuticals, Inc.
AGrant or award
Stock Option (right to buy)derivative
+17,365$0.00$017,365Jun 3, 2026
Jun 2, 2025AMPH
Amphastar Pharmaceuticals, Inc.
AGrant or award
Common Stock
+5,122$0.00$0152,899Jun 4, 2025
Jun 3, 2025AMPH
Amphastar Pharmaceuticals, Inc.
FTax withholding
Common Stock
-923$26.01$24k151,976Jun 4, 2025
Jun 2, 2025AMPH
Amphastar Pharmaceuticals, Inc.
AGrant or award
Stock Option (right to buy)derivative
+11,402$0.00$011,402Jun 4, 2025

Questions about Howard Lee

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

Is Howard Lee buying or selling?

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

How did Howard Lee's past buys perform?

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

Where does Howard Lee file Form 4?

Howard Lee has filed Form 4 at AMPH (Amphastar Pharmaceuticals, Inc.). 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.