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buyNotable cluster of 2

Brian C Stephenson bought $326k of FTH

Chief Financial Officer at Sensei Biotherapeutics, Inc.. 13,634 shares at an average of $23.92, traded Jun 29, 2026, filed Jul 1, 2026.

Conviction score
64
Value
$326k
13,634 shares
Holdings after
46,688
+41% from before
From 52-week low
+241%
low $6.80, close $23.22
From 52-week high
-34%
high $35.07, as of Jun 29, 2026

Score components

  • Role
    CFO
    +22
  • Trade size
    $326k at market
    +15
  • Relative to holdings
    Holdings up 41%
    +6
  • Price context
    34% below the 52-week high
    +8
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    3 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.

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 13, 2026 · close 21.51
Since filing Jul 1, 2026: -9.1%SPY +4.6% · excess -13.7%

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 0001780030-26-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jun 29, 2026POpen-market purchase
Common Stockindirect: See footnote
+831$23.34$19k33,885Jul 1, 2026
Jun 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+1,910$22.95$44k35,795Jul 1, 2026
Jun 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+1,638$23.88$39k37,433Jul 1, 2026
Jun 30, 2026POpen-market purchase
Common Stockindirect: See footnote
+4,255$24.98$106k41,688Jul 1, 2026
Jul 1, 2026POpen-market purchase
Common Stockindirect: See footnote
+4,400$23.40$103k46,088Jul 1, 2026
Jul 1, 2026POpen-market purchase
Common Stockindirect: See footnote
+600$24.22$15k46,688Jul 1, 2026

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
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%
39Weak
FTHbuy
Sensei Biotherapeutics, Inc.
Millennium Management LLC
owner
$818k
30,585 shares
+23%
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.

Brian C Stephenson bought $326k of FTH | InsiderTell