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STXNet selling

Insider activity on STX over the last 12 months.

Open-market buys
Open-market sells
$108.8M
Distinct insiders
9
Filings (12mo)
65
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Price & insider trades

Where insiders bought and sold against STX's price — tap a bubble for the P&L since.

Insider buyInsider sellClose · 12mo · $820.16 now
Tap a bubble to see the insider's P&L since they traded.

Graded signals

AI-scored insider events on STX — tap any signal for the full read.

BEARISH
STX CEO sells $18.8M amid ongoing multi-month liquidation pattern
4d ago

CEO William Mosley sold $18.8M worth of STX shares at $910.48, reducing his direct holdings by 6%, while the stock trades 19% below its 90-day high. This sale continues a concerning pattern of CEO liquidation totaling over $70M in recent months, occurring despite a STRONG BUY analyst consensus and 15 days before earnings. Bull: beats $5.13 EPS consensus → holds above $900. Bear: breaks $801 support level.

Where it could go — Our 5-6 conviction officer sells: 52% beat SPY at 30d; bear breaks $801, bull holds $900.

Conviction 6/10HIGH importance70% confidence
BEARISH
STX CEO sells $8.6M amid massive liquidation spree despite STRONG BUY consensus
4d ago

CEO William Mosley sold $8.6M at $924.42, reducing his direct stake by 2.9% from a position 19% below the 90-day high. This sale extends a verified pattern of 16 lifetime sells with no buys, including $70M+ in recent months, contradicting analyst STRONG BUY consensus with no insider buyer support. Bear: breaks $801 support; bull holds above $924 with earnings in 15 days.

Where it could go — Our 5-6 conviction officer sells: 52% beat SPY at 30d; bear breaks $801, bull holds $924.

Conviction 5/10MEDIUM importance52% confidence
BEARISH
STX CEO sells $1.6M, continuing a $70M+ multi-month liquidation pattern
21d ago

CEO William Mosley sold $1.6M worth of shares at $880.19, trimming his direct stake by 0.5% at a price 9% below the 90-day high. This sale is the latest in a verified pattern of 16 all-time sells, including over $70M in the last three months, signaling a consistent and significant reduction of personal exposure. Bear: a break below the 30-day low of $695.14 could accelerate the downtrend; bull case requires holding above $800 to challenge the recent high.

Where it could go — Broad base rate 57.1% positive at 90d; bear breaks $695, bull holds $800.

Conviction 5/10MEDIUM importance60% confidence
NEUTRAL
STX CFO sells $795K, part of ongoing pattern with no other buyers
21d ago

STX CFO Romano Gianluca sold $795K worth of shares, reducing his direct holdings by 2.1% at a price 9% below the 90-day high. This sale fits his established history of 7 prior sells and lacks any supporting cluster of insider buys, making it a routine transaction.

Where it could go — Analyst mean target implies +Y%; bear case if stock breaks $W.

Conviction 3/10LOW importance30% confidence
NEUTRAL
STX CCO sells $871K in routine option exercise-and-sell
21d ago

EVP & CCO Teh Ban Seng sold $871K worth of shares at $880.19, a price 9.0% below the 90-day high, but this was a mechanical exercise-and-sell of newly acquired options that left his pre-existing stake unchanged. This is a routine transaction consistent with his 18 prior sales and lacks the conviction of a discretionary trade reducing a core position.

Where it could go — Analyst mean target implies +Y%; bear case if stock breaks $W.

Conviction 2/10LOW importance30% confidence
BEARISH
STX EVP & CTO sells $1.2M, stake down 10%, as stock sits 150% above 90d low
21d ago

EVP & CTO Morris John Christopher sold $1.2M worth of shares at $880.19, reducing his directly held stake by 10.1% from a position 9.0% below the 90-day high. This sale is his 12th on record and follows a pattern of consistent selling, lacking the urgency of a top call but occurring after a massive 150.5% run from the 90-day low. Bear: breaks the $695.14 30-day low support level.

Where it could go — Broad base rate 57.1% positive at 90d; bear breaks $695.14.

Conviction 5/10MEDIUM importance65% confidence
NEUTRAL
STX EVP & CFO exercises 2,474 options, sells $1.1M — newly exercised shares only
25d ago

Romano Gianluca exercised 2,474 options at $0.00 and sold the resulting shares at $821.76 ($1.1M). The sale came from newly exercised options and did not reduce previously held shares, leaving 42,068 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10MEDIUM importance60% confidence
NEUTRAL
STX CEO exercises 5,230 options, sells $2.3M — newly exercised shares only
25d ago

MOSLEY WILLIAM D exercised 5,230 options at $0.00 and sold the resulting shares at $821.74 ($2.3M). The sale came from newly exercised options and did not reduce previously held shares, leaving 325,966 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10MEDIUM importance60% confidence
NEUTRAL
STX EVP & CTO exercises 1,130 options, sells $471K — newly exercised shares only
25d ago

Morris John Christopher exercised 1,130 options at $0.00 and sold the resulting shares at $821.66 ($471K). The sale came from newly exercised options and did not reduce previously held shares, leaving 12,510 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10MEDIUM importance60% confidence
NEUTRAL
STX CCO exercises 1,262 options, sells $545K — newly exercised shares only
25d ago

Teh Ban Seng exercised 1,262 options at $0.00 and sold the resulting shares at $821.86 ($545K). The sale came from newly exercised options and did not reduce previously held shares, leaving 4,290 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance40% confidence
BEARISH30d -10.0% vs SPY
STX director sells $928K in first-ever stock sale, stake down 13%
32d ago

Director Arumugavelu Shankar sold $928K worth of STX stock, reducing his stake by 13.1% from 7,626 shares at a price 4.0% below the 90-day high. This first-time sale, following a cluster of recent CEO sales with no offsetting buys, is more indicative of routine portfolio management than a strong bearish signal.

Where it could go — Analyst mean target not provided; bear case if stock breaks the 30-day low of $695.14.

Conviction 2/10LOW importance40% confidence
NEUTRAL
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL30d +0.8% vs SPY
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL30d +0.8% vs SPY
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL30d +0.8% vs SPY
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence
NEUTRAL30d +0.8% vs SPY
STX CEO exercises 14,000 options, sells $531K — newly exercised shares only
34d ago

MOSLEY WILLIAM D exercised 14,000 options at $46.23 and sold the resulting shares at $884.62 ($531K). The sale came from newly exercised options and did not reduce previously held shares, leaving 352,991 directly held shares.

Where it could go — Exercise-and-sell transactions are largely mechanical and carry limited directional signal.

Conviction 2/10LOW importance30% confidence

Recent insider trades

The open-market buys and sells filed on STX.

MOSLEY WILLIAM D
CEO · 2026-07-01
$18.8M
sell
MOSLEY WILLIAM D
CEO · 2026-07-01
$8.6M
sell
MOSLEY WILLIAM D
CEO · 2026-06-12
$1.6M
sell
Romano Gianluca
EVP & CFO · 2026-06-12
$795K
sell
Teh Ban Seng
EVP & Chief Commercial Officer · 2026-06-12
$871K
sell
Morris John Christopher
EVP & CTO · 2026-06-12
$1.2M
sell
Romano Gianluca
EVP & CFO · 2026-06-10
$1.1M
sell
MOSLEY WILLIAM D
CEO · 2026-06-10
$2.3M
sell
Morris John Christopher
EVP & CTO · 2026-06-10
$471K
sell
Teh Ban Seng
EVP & Chief Commercial Officer · 2026-06-10
$545K
sell
Arumugavelu Shankar
Director · 2026-06-04
$928K
sell
BHATT PRAT
Director · 2026-06-02
$930K
sell
MOSLEY WILLIAM D
CEO · 2026-06-01
$14.6M
sell
MOSLEY WILLIAM D
CEO · 2026-06-01
$12.7M
sell
Conyers Yolanda Lee
Director · 2026-06-01
$664K
sell
MOSLEY WILLIAM D
CEO · 2026-05-20
$61K
sell
MOSLEY WILLIAM D
CEO · 2026-05-20
$243K
sell
MOSLEY WILLIAM D
CEO · 2026-05-20
$1.1M
sell