Stock Insider AIKnow. Analyze. Invest.
S

STX

STX

UnknownUnknown

Company information not available. Track real-time insider trading activity, SEC Form 4 filings, and executive stock transactions.

SEC Form 4 FilingsStock Chart
Insider Sentiment
Based on recent trading activity
0%Bearish
Buy/Sell Ratio0% buys
BearishBullish

Insider Buys

0

$0

Insider Sales

4

$167.36M

Total Volume

$167.36M

4 transactions

Net Activity

$167.36M

Net selling

Proprietary Ratings
Calculated from Form 4 transactions
15Confidence

Sentiment Rating

Heavy Distribution

CEO Conviction Index

Liquidating / Profit Taking

Key Drivers

  • •Heavy distribution: sales represent 100% of total transaction value.
  • •CEO selling activity detected. Often driven by option expiration or diversification plans.
  • •Significant liquidation: total sale value exceeds $10M.
Score Methodology

The Insider Confidence Score (1-100) measures executive conviction. Starting from a neutral 50, it adjusts based on:

  • +15Strong Buy Ratio: Purchases > 70% of volume (or up to -15 for heavy sales).
  • +20Cluster Buying: ≥3 unique insiders buying within a 30-day window.
  • +15CEO Buying: CEO committing own capital shows high conviction.
  • +10CFO Buying: CFO purchasing shares shows financial alignment.
Sector & Industry
Unknown Comparison
Industry Buy Conviction50%
STX Buy Conviction0%
Industry Rank#0 of 161
Volume Contribution0.0%
Total Industry Activity$0

STX has an insider buy conviction of 0%, compared to the Unknown sector buy average of 50%.

Top Insiders
Most active traders
M
1

Mosley William D

CEO

0 buys1 sells

$75.58M total

T
2

Teh Ban Seng

EVP, Chief Commercial Officer

0 buys1 sells

$41.24M total

R
3

Romano Gianluca

EVP, CFO

0 buys1 sells

$38.60M total

M
4

Morris John Christopher

EVP, CTO

0 buys1 sells

$11.94M total

Insider Trading Summary
Automated trend commentary

Over the last 90 days, corporate insiders at STX (STX) engaged in a total of 4 transactions reported via SEC Form 4 filings. Among these, 0 were open-market purchases and 4 were sales. The total volume of insider trading reached $167.36M.

The net insider activity for STX shows a net selling bias of $167.36M. This activity represents a 0% buy ratio, suggesting that insiders are currently bearish on the company's near-term outlook relative to recent history.

The most notable individual transaction was a Sale by Mosley William D (CEO), who traded 97.9K shares valued at $75.58M on Sep 15, 2026.

Quick Actions

Advanced ScreenerLatest TradesView Charts
Trading History
STX insider transactions from SEC Form 4 filings
DateInsiderTypeSharesPriceValueFiling

Sep 15, 2026

1 weeks ago

Romano Gianluca

EVP, CFO

CFO
Sell50.0K$772.16$38.60M

Sep 15, 2026

1 weeks ago

Mosley William D

CEO

CEO
Sell97.9K$772.14$75.58M

Sep 15, 2026

1 weeks ago

Teh Ban Seng

EVP, Chief Commercial Officer

EVP
Sell52.7K$782.08$41.24M

Sep 15, 2026

1 weeks ago

Morris John Christopher

EVP, CTO

CTO
Sell15.5K$772.15$11.94M

FAQs About STX Insider Trading

Answers to common questions regarding corporate filings and executive sentiment for STX.

Based on SEC Form 4 disclosures, the Insider Confidence Score for STX is currently 15/100, which reflects a heavy distribution bias. This calculation accounts for a total of 0 purchases and 4 sales by company executives over the last 90 days.

The CEO Conviction Index for STX is rated as "Liquidating / Profit Taking". Executive buying is typically a strong vote of confidence as C-level leaders have the most intimate knowledge of their firm's prospects. Officer selling, on the other hand, is often routine and does not automatically signal operational weakness.

No. Insider tracking is a highly informative technical signal that indicates executive sentiment, but it should not be the sole basis for a transaction. Investors should combine this filing analysis with company financials, sector trends, and risk management criteria.