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buyWeak cluster of 2

Anthony Mark Marciano bought $20k of STEX

director at BioSig Technologies, Inc.. 17,745 shares at an average of $1.13, traded May 21, 2026, filed May 22, 2026.

Conviction score
34
Value
$20k
17,745 shares
Holdings after
117,745
+18% from before
From 52-week low
+48%
low $0.76, close $1.13
From 52-week high
-90%
high $11.55, as of May 21, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $20k at market
    0
  • Relative to holdings
    Holdings up 18%
    +3
  • Price context
    90% below the 52-week high
    +8
  • Cluster
    2 insiders buying within 14 days
    +8
  • 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.

STEXOct 12, 2026 · close 0.48
Since filing May 22, 2026: -62.2%SPY +4.9% · excess -67.1%

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 0001493152-26-025010, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 21, 2026POpen-market purchase
Common stock
+17,745$1.13$20k117,745May 22, 2026

Related signals

Other insiders at BioSig Technologies, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
STEXsell 2
BioSig Technologies, Inc.
Christine Marie Plummer
Chief Financial Officer
$7,175
13,344 shares
-3%
29Weak
STEXsell 2
BioSig Technologies, Inc.
Mitchell Young Williams
Chief Investment Officer
$35k
65,538 shares
-2%
22Weak
STEXsell
BioSig Technologies, Inc.
Mitchell Young Williams
Chief Investment Officer
$52k
72,689 shares
-2%
38Weak
STEXbuy
BioSig Technologies, Inc.
Morgan Lee Lekstrom
Interim Executive Chairman
$50k
50,000 shares
+16%
15Weak
STEXsell
BioSig Technologies, Inc.
Mitchell Young Williams
Chief Investment Officer
$25k
23,810 shares
-1%
46Moderate
STEXbuy 2
BioSig Technologies, Inc.
Morgan Lee Lekstrom
Interim Executive Chairman
$50k
34,000 shares
+12%
64Notable
STEXbuy 3
BioSig Technologies, Inc.
Morgan Lee Lekstrom
Interim Executive Chairman
$147k
47,000 shares
+671%
52Moderate
STEXbuy 2
BioSig Technologies, Inc.
Morgan Lee Lekstrom
Interim Executive Chairman
$153k
147,000 shares
+120%
27Weak
STEXsell
BioSig Technologies, Inc.
Mitchell Young Williams
Chief Investment Officer
$210k
263,863 shares
-8%
35Weak
STEXsell 3
BioSig Technologies, Inc.
Morgan Lee Lekstrom
Interim Executive Chairman
$14k
12,759 shares
-6%

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.

Anthony Mark Marciano bought $20k of STEX | InsiderTell