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Seagate Stock Fell 9% Amid Steady Insider Selling. Here’s What That Signals

Wiltone Asuncion6 minute read
Reviewed by: David Hanson
Last updated Aug 19, 2026

@Mile Atanasov from magraphics via Canva, @Azamat Esenaliev from Pexels via Canva

Key Stats for Seagate Stock

  • Current Price: $903.68
  • Target Price (Mid): ~$3,749
  • Street Target: ~$1,125
  • Potential Total Return: ~315%
  • Annualized IRR: ~34% / year

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What Happened?

Seagate Technology Holdings (STX) dropped 9.16% on August 18, closing at $903.68, and nothing about the business explained it. No earnings, no downgrade, no cut to guidance. The stock simply gave back part of an extraordinary run, up roughly 490% from its 52-week low of $152.50, and it fell alongside the broader memory group as traders locked in profits. Micron and SanDisk sold off on the same day.

Coloring the mood is a steady stream of insider sales that the earlier sector-driven selloffs did not carry. Seagate executives have sold roughly $274 million in stock over the past year with no open-market purchases, and the pace continued through August as the price pushed toward records. That is the tension worth examining: a company posting the best numbers in its history, and the people running it steadily reducing their stakes.

The Selling Is Real, but Most of It Was Scheduled in Advance

Insiders sold about $274 million over twelve months, roughly $145 million of it in the last three months, with no buys, based on SEC Form 4 filings. CEO Dave Mosley sold 17,080 shares on August 3. CFO Gianluca Romano sold 14,091 shares on August 7. EVP and Chief Commercial Officer Ban Seng Teh sold about $6.8 million worth on August 13.

How those sales happened matters more than the total. Nearly all of them ran through Rule 10b5-1 trading plans, pre-arranged schedules that Seagate’s officers adopted earlier in 2026, before the biggest leg of the rally. Mosley’s plan was adopted in February; other executives filed theirs across January and the spring. Under those plans, trades execute on a fixed calendar regardless of what an executive knows on a given day. The selling is not a verdict on the story. It reflects a management team sitting on stock that has multiplied several times over, diversifying on schedule, which is what most people in that position do.

When insiders sell into strength, and none of them buy, the tape reads a ceiling even when the filings say routine. That reflex, more than any change in fundamentals, is part of why August 18 landed as hard as it did.

Seagate Drawdowns (TIKR)

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The Business They Are Selling Into

Seagate just closed the strongest fiscal year in its history: June-quarter revenue of $3.63 billion, up 48% year over year, and non-GAAP EPS of $5.71, up 120%, past the high end of guidance. Non-GAAP gross margin hit a record 52.7%, up 570 basis points sequentially, and free cash flow of $1.1 billion was the best in over a decade. Management guided the September quarter to around $4.1 billion in revenue and around $7.30 in EPS, another sequential step up. Executives are trimming into that strength, not away from weakness, and the vast majority of nearline exabytes are already contracted into calendar 2028, with some customers pushing to lock supply through 2029.

Seagate trades near 25x NTM P/E and about 20x NTM EV/EBITDA, a clear premium to Western Digital near 18x and Dell near 17x, with the peer median closer to 16x. The premium is not indefensible: Seagate’s two-year forward EBITDA is growing far faster than the group, near a 77% CAGR, and its margins now sit at the top of the peer set. The risk is that the market has priced perfection into a name it has always treated as cyclical, leaving little room if pricing softens or hyperscaler order patterns shift.

Seagate NTM EV / EBITDA (TIKR)

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TIKR Advanced Model Analysis

  • Current Price: $903.68
  • Target Price (Mid): ~$3,749
  • Potential Total Return: ~315%
  • Annualized IRR: ~34% / year
Seagate Advanced Valuation Model (TIKR)

See analysts’ growth forecasts and price targets for Seagate stock (It’s free!) >>>

That mid case sits well above the Street’s own mean target of around $1,125, a gap that reflects the model’s longer horizon and its assumption that contracted pricing holds through the decade rather than fading as the market expects. The two revenue drivers are nearline exabyte growth in the mid-20% range from the HAMR roadmap, and pricing gains on uncommitted volume where demand runs ahead of supply. The margin driver is operating leverage on a flat unit-cost base, since Seagate is holding drive counts steady while pushing more terabytes through the same factories. The primary risk is multiple compression: the model itself assumes the multiple contracts slightly each year, and if AI infrastructure spending peaks and supply catches demand, that compression could run deeper. The upside is that contracted demand holds, pricing keeps climbing, and the cash flow ramp funds buybacks that compound the return. The downside is that a stock near 25x earnings has little cushion if even one quarter breaks the sequential trend.

Conclusion

The insider selling is the wrong thing to fixate on. Pre-scheduled 10b5-1 sales into a multi-year run signal diversification, not a cracking thesis. The number that matters arrives with the September quarter, expected in late October. Management guided to around $4.1 billion in revenue and around $7.30 in non-GAAP EPS. Hit both, and the sequential-growth story that justifies the premium holds. Miss on revenue, or show any wobble in gross margin off the record 52.7%, and a stock priced for continuation has far to fall before it finds support.

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Should You Invest in Seagate?

The only way to really know is to look at the numbers yourself. TIKR gives you free access to the same institutional-quality financial data that professional analysts use to answer exactly that question.

Pull up Seagate, and you’ll see years of historical financials, what Wall Street analysts expect for revenue and earnings in the quarters ahead, how valuation multiples have moved over time, and whether price targets are trending up or down.

You can build a free watchlist to track Seagate alongside every other stock on your radar. No credit card required. Just the data you need to decide for yourself.

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Disclaimer:

Please note that the articles on TIKR are not intended to serve as investment or financial advice from TIKR or our content team, nor are they recommendations to buy or sell any stocks. We create our content based on TIKR Terminal’s investment data and analysts’ estimates. Our analysis might not include recent company news or important updates. TIKR has no position in any stocks mentioned. Thank you for reading, and happy investing!

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