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buyWeak cluster of 2

Rainer M Erdtmann bought $43k of BMEA

See Remarks at Biomea Fusion, Inc.. 30,000 shares at an average of $1.43, traded Dec 11, 2025, filed Dec 15, 2025.

Conviction score
34
Value
$43k
30,000 shares
Holdings after
723,027
+4% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Officer
    +15
  • Trade size
    $43k at market
    +6
  • Relative to holdings
    Holdings up 4.3%
    0
  • Price context
    No price history yet
    0
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    2 buys in 90 days
    +5
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Rows in this filing

Every transaction in Form 4 0001193125-25-319222, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 11, 2025POpen-market purchase
Common Stock
+30,000$1.43$43k723,027Dec 15, 2025

Related signals

Other insiders at Biomea Fusion, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
53Moderate
BMEAbuy 2
Biomea Fusion, Inc.
Michael J.M. Hitchcock
Interim CEO
$99k
100,000 shares
+667%
33Weak
BMEAbuy 2
Biomea Fusion, Inc.
Rainer M Erdtmann
See Remarks
$55k
50,000 shares
+8%

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.

Rainer M Erdtmann bought $43k of BMEA | InsiderTell