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Insider · CIK 0001465837

Boxer Capital, LLC

otherdirector

Files at MRTX (Mirati Therapeutics, Inc.), TNGX (Tango Therapeutics, Inc.), TYRA (Tyra Biosciences, Inc.). First filing Oct 11, 2023, latest Oct 17, 2023.

In brief

Boxer Capital, LLC files SEC Form 4 as director at TNGX (Tango Therapeutics, Inc.), and also at MRTX (Mirati Therapeutics, Inc.), TYRA (Tyra Biosciences, Inc.). Since Oct 11, 2023, Boxer Capital, LLC has reported 2 open-market buys worth $17M and 1 open-market sell worth $2.2M, the latest filed on Oct 17, 2023.

A track record needs three past buys with six months of prices behind them; Boxer Capital, LLC has 2, so none is measured yet.

The newest scored trade: bought $8.7M of TNGX on Oct 13, 2023, filed Oct 17, 2023, scored 29 (weak), under a 10b5-1 plan.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 2
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
2 / 1
$17M bought, $2.2M sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

TNGX: Tango Therapeutics, Inc.

TNGXOct 13, 2026 · close 22.22

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

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

ScoreCompanyValueHoldingsPrice contextFiled
29Weak
TNGXbuy10b5-1
Tango Therapeutics, Inc.
$8.7M
1,250,000 shares
+18%+188% from low-36% from high
44Moderate
TNGXbuy
Tango Therapeutics, Inc.
$8.7M
1,250,000 shares
+18%+188% from low-36% from high
43Moderate
TNGXsell
Tango Therapeutics, Inc.
$2.2M
225,000 shares
-30%+270% from low-18% from high

Transactions

Every row this insider has filed, 18 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Feb 6, 2024TYRA
Tyra Biosciences, Inc.
AGrant or award
Common Stockindirect: See Footnote
+63,412$13.01$825k85,939Feb 8, 2024
Feb 6, 2024TYRA
Tyra Biosciences, Inc.
AGrant or award
Warrant (right to purchase)derivative
+705,280$13.01$9.2M705,280Feb 8, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Common Stockindirect: See Footnote
-287,866--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Common Stock
-3,201,440--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Common Stockindirect: See Footnote
-203,754--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Common Stockindirect: See Footnote
-3,135,966--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Common Stockindirect: See Footnote
-30,518--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Warrant (right to purchase)derivative
-332,809--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Warrant (right to purchase)derivativeindirect: See Footnote
-3,578,036--0Jan 25, 2024
Jan 23, 2024MRTX
Mirati Therapeutics, Inc.
DDisposition to issuer
Warrant (right to purchase)derivativeindirect: See Footnote
-1,413,475--0Jan 25, 2024
Oct 13, 2023TNGX
Tango Therapeutics, Inc.
POpen-market purchase
Common Stock10b5-1
+750,000$7.07$5.3M7,698,642Oct 17, 2023
Oct 13, 2023TNGX
Tango Therapeutics, Inc.
POpen-market purchase
Common Stock
+750,000$7.07$5.3M7,698,642Oct 17, 2023
Oct 16, 2023TNGX
Tango Therapeutics, Inc.
POpen-market purchase
Common Stock10b5-1
+500,000$6.84$3.4M8,198,642Oct 17, 2023
Oct 16, 2023TNGX
Tango Therapeutics, Inc.
POpen-market purchase
Common Stock
+500,000$6.84$3.4M8,198,642Oct 17, 2023
Oct 9, 2023TNGX
Tango Therapeutics, Inc.
SOpen-market sale
Common Stockindirect: See footnote
-50,000$9.91$496k693,524Oct 11, 2023
Aug 11, 2023TNGX
Tango Therapeutics, Inc.
AGrant or award
Common Stockindirect: See footnote
+475,000$5.15$2.4M743,542Oct 11, 2023
Oct 9, 2023TNGX
Tango Therapeutics, Inc.
SOpen-market sale
Common Stock
-175,000$9.97$1.7M6,948,642Oct 11, 2023
Aug 11, 2023TNGX
Tango Therapeutics, Inc.
AGrant or award
Prefunded Warrantderivative
+2,340,579$5.15$12M2,340,579Oct 11, 2023

Questions about Boxer Capital, LLC

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

Is Boxer Capital, LLC buying or selling?

Not in the last 12 months. Boxer Capital, LLC's latest open-market trade on SEC Form 4 was bought $8.7M of TNGX on Oct 13, 2023.

How did Boxer Capital, LLC's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Boxer Capital, LLC has 2.

Where does Boxer Capital, LLC file Form 4?

Boxer Capital, LLC has filed Form 4 at TNGX (Tango Therapeutics, Inc.); MRTX (Mirati Therapeutics, Inc.); TYRA (Tyra Biosciences, 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.

Boxer Capital, LLC: insider trades and track record | InsiderTell