Skip to content
sellNotable cluster of 3

Shulamit Ron-Bigger sold $1.4M of AKTS

Chief Operating Officer at Aktis Oncology, Inc.. 50,000 shares at an average of $27.75, traded Jul 8, 2026, filed Jul 10, 2026.

Warning score
65
Value
$1.4M
50,000 shares
Holdings after
0
-100% from before
From 52-week low
+89%
low $15.19, close $28.69
From 52-week high
-11%
high $32.23, as of Jul 8, 2026

Score components

  • Role
    COO
    +20
  • Trade size
    $1.4M at market
    +25
  • Share of holdings sold
    Sold 100% of holdings
    +20
  • Cluster
    3 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15

What happened after comparable sells

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.

AKTSOct 12, 2026 · close 17.34
Since filing Jul 10, 2026: -37.8%SPY +3.3% · excess -41.1%

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 0001193125-26-300163, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jul 8, 2026MOption exercise
Common Stock
+50,000$3.66$183k50,000Jul 10, 2026
Jul 8, 2026SOpen-market sale
Common Stock
-15,800$27.13$429k34,200Jul 10, 2026
Jul 8, 2026SOpen-market sale
Common Stock
-30,000$27.94$838k4,200Jul 10, 2026
Jul 8, 2026SOpen-market sale
Common Stock
-4,200$28.75$121k0Jul 10, 2026
Jul 8, 2026MOption exercise
Stock Option (Right to Buy)derivative
-50,000$0.00$0217,888Jul 10, 2026

Related signals

Other insiders at Aktis Oncology, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
13Weak
AKTSsell10b5-1
Aktis Oncology, Inc.
Akos Czibere
Chief Medical Officer
$259k
12,500 shares
-100%
45Moderate
AKTSsell 3
Aktis Oncology, Inc.
Ken Herrmann
director
$119k
4,856 shares
-100%
43Moderate
AKTSsell 3
Aktis Oncology, Inc.
Ken Herrmann
director
$77k
3,065 shares
-100%
60Notable
AKTSsell 3
Aktis Oncology, Inc.
Akos Czibere
Chief Medical Officer
$1.4M
50,000 shares
-100%
60Notable
AKTSbuy 6
Aktis Oncology, Inc.
Ansbert Gadicke
owner
$20M
1,112,777 shares
+12%
60Notable
AKTSbuy 6
Aktis Oncology, Inc.
Mpm Bioventures 2018, L.p.
owner
$20M
1,112,777 shares
+12%
68Notable
AKTSbuy 6
Aktis Oncology, Inc.
Todd Foley
director, owner
$4.2M
232,870 shares
+6%
75Notable
AKTSbuy 6
Aktis Oncology, Inc.
EcoR1 Capital, LLC
director
$40M
2,222,222 shares
+98%
68Notable
AKTSbuy 6
Aktis Oncology, Inc.
Helen Susan Kim
director, owner
$15M
835,000 shares
+17%
60Notable
AKTSbuy 6
Aktis Oncology, Inc.
Vida Ventures II, LLC
owner
$15M
835,000 shares
+17%

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.

Shulamit Ron-Bigger sold $1.4M of AKTS | InsiderTell