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Insider · CIK 0001948795

Michael J Rossi

ceopresidentofficerdirector

Files at YMAB (Y-mAbs Therapeutics, Inc.). First filing -, latest -.

In brief

Michael J Rossi files SEC Form 4 as CEO, president and director at YMAB (Y-mAbs Therapeutics, 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; Michael J Rossi 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.

Planned sales

Form 144 notices this insider filed before selling restricted or control stock, newest first.

FiledCompanySharesValueSale datePast 3 months
Mar 7, 2025 YMAB
Y-mAbs Therapeutics, Inc.
3,917
0.01% of outstanding
$20kMar 7, 2025none

Transactions

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

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
UTender of shares
Common Stock
-7,982$8.60$69k0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Common Stock
-129,101--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Employee Stock Option (right to buy)derivative
-615,240--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Employee Stock Option (right to buy)derivative
-214,200--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Employee Stock Option (right to buy)derivative
-210,700--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Restricted Stock Unitsderivative
-18,000--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Restricted Stock Unitsderivative
-18,000--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Restricted Stock Unitsderivative
-18,000--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Restricted Stock Unitsderivative
-52,650--0Sep 18, 2025
Sep 16, 2025YMAB
Y-mAbs Therapeutics, Inc.
DDisposition to issuer
Restricted Stock Unitsderivative
-52,650--0Sep 18, 2025

Questions about Michael J Rossi

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

Is Michael J Rossi buying or selling?

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

How did Michael J Rossi's past buys perform?

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

Where does Michael J Rossi file Form 4?

Michael J Rossi has filed Form 4 at YMAB (Y-mAbs Therapeutics, Inc.) as PRESIDENT & CEO. 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.

Michael J Rossi: insider trades and track record | InsiderTell