Skip to content

Insider · CIK 0001332108

Charles Thomas McMillen

director

Files at NXST (NEXSTAR MEDIA GROUP, INC.), CTM (Castellum, Inc.). First filing Dec 27, 2024, latest Mar 27, 2026.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 3
$0 bought, $185k sold

Where the trades landed

Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.

CTM: Castellum, Inc.

CTMOct 9, 2026 · close 0.62

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

NXST: NEXSTAR MEDIA GROUP, INC.

NXSTOct 9, 2026 · close 161.45

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
20Weak
CTMsell
Castellum, Inc.
$21k
30,000 shares
-11%+3% from low-53% from high
26Weak
CTMsell
Castellum, Inc.
$44k
55,000 shares
-17%0% from low-47% from high
40Moderate
NXSTsell 3
NEXSTAR MEDIA GROUP, INC.
$120k
750 shares
-10%-

Planned sales

Form 144 notices this insider filed before selling restricted or control stock, newest first.

FiledCompanySharesValueSale datePast 3 months
Dec 26, 2024 NXST
NEXSTAR MEDIA GROUP, INC.
750
0.00% of outstanding
$120kDec 26, 2024none

Transactions

Every row this insider has filed, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Mar 25, 2026CTM
Castellum, Inc.
SOpen-market sale
Common Stock
-30,000$0.70$21k231,015Mar 27, 2026
Mar 24, 2026NXST
NEXSTAR MEDIA GROUP, INC.
MOption exercise
Common Stock
+1,123$0.00$06,658Mar 25, 2026
Mar 24, 2026NXST
NEXSTAR MEDIA GROUP, INC.
MOption exercise
Restricted Stock Unitsderivative
-1,123$0.00$00Mar 25, 2026
Mar 19, 2026NXST
NEXSTAR MEDIA GROUP, INC.
AGrant or award
Restricted Stock Unitsderivative
+905$0.00$0905Mar 20, 2026
Mar 18, 2026CTM
Castellum, Inc.
SOpen-market sale
Common Stock
-55,000$0.80$44k261,015Mar 20, 2026
Nov 11, 2025CTM
Castellum, Inc.
AGrant or award
Stock Optionsderivative
+100,000$0.00$0100,000Nov 13, 2025
Aug 21, 2025CTM
Castellum, Inc.
MOption exercise
Common Stock
+125,000$0.21$27k316,015Aug 21, 2025
Aug 20, 2025CTM
Castellum, Inc.
MOption exercise
Stock Optionsderivative
-125,000$0.21$27k0Aug 21, 2025
Jan 2, 2025CTM
Castellum, Inc.
MOption exercise
Common Stock
+100,028$0.21$21k191,015Jan 3, 2025
Jan 2, 2025CTM
Castellum, Inc.
MOption exercise
Stock Optionsderivative
-110,028$0.21$23k139,972Jan 3, 2025
Jan 2, 2025CTM
Castellum, Inc.
FTax withholding
Stock Optionsderivative
-14,972$0.21$3,174125,000Jan 3, 2025
Dec 26, 2024NXST
NEXSTAR MEDIA GROUP, INC.
SOpen-market sale
Common Stock
-750$159.93$120k6,975Dec 27, 2024

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.

Charles Thomas McMillen: insider trades and track record | InsiderTell