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Millennium Management LLC bought $818k of FTH

owner at Sensei Biotherapeutics, Inc.. 30,585 shares at an average of $26.75, traded Mar 26, 2026, filed May 15, 2026.

Conviction score
39
Value
$818k
30,585 shares
Holdings after
145,678
+23% from before
From 52-week low
+365%
low $5.78, close $26.88
From 52-week high
-23%
high $35.07, as of Mar 26, 2026

Score components

  • Role
    10% owner
    +12
  • Trade size
    $818k at market
    +22
  • Relative to holdings
    Holdings up 23%
    +6
  • Price context
    23% below the 52-week high
    +4
  • Cluster
    No other insider buying within 14 days
    0
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0
  • Outside holder
    A 10% owner who is not an officer or director
    -5

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.

This signal so far: 1m -36.4%, 3m +58.3%, 6m -.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

FTHOct 9, 2026 · close 26.03
Since filing May 15, 2026: +27.4%SPY +5.8% · excess +21.6%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001104659-26-062603, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 26, 2026POpen-market purchase
Common Stockindirect: See footnote
+778$27.23$21k131,370May 15, 2026
Mar 26, 2026POpen-market purchase
Common Stockindirect: See footnote
+1,327$27.95$37k131,370May 15, 2026
Mar 26, 2026POpen-market purchase
Common Stockindirect: See footnote
+2,601$28.85$75k131,370May 15, 2026
Mar 26, 2026POpen-market purchase
Common Stockindirect: See footnote
+1,025$29.98$31k131,370May 15, 2026
Mar 26, 2026SOpen-market sale
Common Stockindirect: See footnote
-583$26.88$16k131,370May 15, 2026
Mar 26, 2026SOpen-market sale
Common Stockindirect: See footnote
-1,274$28.69$37k131,370May 15, 2026
Mar 27, 2026POpen-market purchase
Common Stockindirect: See footnote
+10,643$26.29$280k142,360May 15, 2026
Mar 27, 2026POpen-market purchase
Common Stockindirect: See footnote
+4,384$27.28$120k142,360May 15, 2026
Mar 27, 2026POpen-market purchase
Common Stockindirect: See footnote
+294$28.13$8,270142,360May 15, 2026
Mar 27, 2026SOpen-market sale
Common Stockindirect: See footnote
-469$26.77$13k142,360May 15, 2026
Mar 27, 2026SOpen-market sale
Common Stockindirect: See footnote
-36$27.37$985142,360May 15, 2026
Mar 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+2,992$25.08$75k145,678May 15, 2026
Mar 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+4,995$25.99$130k145,678May 15, 2026
Mar 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+1,176$26.70$31k145,678May 15, 2026
Mar 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+370$27.68$10k145,678May 15, 2026
Mar 30, 2026SOpen-market sale
Common Stockindirect: See footnote
-518$25.85$13k145,678May 15, 2026
Mar 30, 2026SOpen-market sale
Common Stockindirect: See footnote
-370$27.68$10k145,678May 15, 2026

Related signals

Other insiders at Sensei Biotherapeutics, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
64Notable
FTHbuy 2
Sensei Biotherapeutics, Inc.
Brian C Stephenson
Chief Financial Officer
$326k
13,634 shares
+41%
69Notable
FTHbuy 2
Sensei Biotherapeutics, Inc.
Brian C Stephenson
Chief Financial Officer
$401k
15,641 shares
+90%
62Notable
FTHbuy 2
Sensei Biotherapeutics, Inc.
Brian C Stephenson
Chief Financial Officer
$406k
17,413 shares
-
43Moderate
FTHbuy 2
Sensei Biotherapeutics, Inc.
Anand Kiran Parikh
President and CEO
$55k
2,806 shares
+0%
43Moderate
FTHsell 2
Sensei Biotherapeutics, Inc.
Cambrian BioPharma Inc
owner
$501k
25,000 shares
-16%
43Moderate
FTHsell 2
Sensei Biotherapeutics, Inc.
James Peyer
owner, other
$501k
25,000 shares
-16%
21Weak
FTHsell
Sensei Biotherapeutics, Inc.
Millennium Management LLC
owner
$89k
3,250 shares
-2%
31Weak
FTHbuy
Sensei Biotherapeutics, Inc.
Millennium Management LLC
owner
$382k
12,180 shares
+8%
20Weak
FTHsell
Sensei Biotherapeutics, Inc.
Millennium Management LLC
owner
$77k
2,741 shares
-2%
23Weak
FTHbuy
Sensei Biotherapeutics, Inc.
Millennium Management LLC
owner
$141k
4,215 shares
+3%

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.

Millennium Management LLC bought $818k of FTH | InsiderTell