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buyNotable cluster of 5

Douglas J Swirsky bought $65k of MXCT

CHIEF FINANCIAL OFFICER at MAXCYTE, INC.. 50,000 shares at an average of $1.29, traded Aug 13, 2025, filed Aug 13, 2025.

Conviction score
69
Value
$65k
50,000 shares
Holdings after
161,811
+45% from before
From 52-week low
+9%
low $1.27, close $1.38
From 52-week high
-73%
high $5.10, as of Aug 13, 2025

Score components

  • Role
    CFO
    +22
  • Trade size
    $64k at market
    +8
  • Relative to holdings
    Holdings up 45%
    +6
  • Price context
    9% above the 52-week low; 73% below the 52-week high
    +18
  • Cluster
    5 insiders buying within 14 days
    +15
  • Repeat buying
    First buy in 90 days
    0
  • 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.

MXCTOct 9, 2026 · close 1.01
Since filing Aug 13, 2025: -26.8%SPY +22.4% · excess -49.2%

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 0000905148-25-002877, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 13, 2025POpen-market purchase
Common Stock
+50,000$1.29$65k161,811Aug 13, 2025

Related signals

Other insiders at MAXCYTE, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
22Weak
MXCTsell
MAXCYTE, INC.
Douglas J Swirsky
CHIEF FINANCIAL OFFICER
$8,266
10,142 shares
-6%
0Weak
MXCTsell10b5-1
MAXCYTE, INC.
Rekha Hemrajani
director
$22k
10,684 shares
-21%
62Notable
MXCTbuy 5
MAXCYTE, INC.
William W Brooke
director
$65k
50,000 shares
+50%
68Notable
MXCTbuy 5
MAXCYTE, INC.
Richard Douglas
director
$111k
80,000 shares
+53%
65Notable
MXCTbuy 5
MAXCYTE, INC.
Stanley C Erck
director
$137k
100,000 shares
+34%
78Notable
MXCTbuy 5
MAXCYTE, INC.
Maher Masoud
President and CEO
$103k
75,000 shares
+75%
0Weak
MXCTsell10b5-1
MAXCYTE, INC.
John Joseph Johnston
director
$14k
3,000 shares
-2%
0Weak
MXCTsell10b5-1
MAXCYTE, INC.
John Joseph Johnston
director
$12k
3,000 shares
-2%
0Weak
MXCTsell10b5-1
MAXCYTE, INC.
John Joseph Johnston
director
$11k
3,000 shares
-2%
5Weak
MXCTsell 210b5-1
MAXCYTE, INC.
Stanley C Erck
director
$177k
47,689 shares
-15%

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.

Douglas J Swirsky bought $65k of MXCT | InsiderTell