Massivemarkets

SEC Form 4

Spyre Therapeutics, Inc. (SYRE) insider trading

In the 12 months to Oct 26, 2026, 7 SYRE insiders reported open-market sales of $441.4M across 31 filings; no open-market purchases were filed.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$441.4M
31 filings · 7 insiders
Open-market purchases
$0
0 filings
Pre-arranged sales (10b5-1)
29 of 31
$40.4M of $441.4M sold (9%)

Who traded SYRE, and when

  • Sale
  • Sale, pre-arranged (10b5-1)

SYRE daily close from Oct 27, 2025 to Oct 26, 2026, between $22.18 and $108.92, last $92.97. 31 sale and 0 purchase filings by 7 insiders, marked at their filing dates. Peter Evan Harwin, Director: sold $399.7M across 1 filing, first filed Jun 23, 2026, last Jun 23, 2026. Cameron Turtle, Chief Executive Officer: sold $11.4M across 12 filings, first filed Nov 5, 2025, last Oct 2, 2026. Michael Thomas Henderson, Director: sold $8.0M across 2 filings, first filed May 8, 2026, last Jun 23, 2026. Scott L. Burrows, Chief Financial Officer: sold $7.5M across 9 filings, first filed Mar 3, 2026, last Oct 2, 2026. Sheldon Sloan, Chief Medical Officer: sold $7.4M across 4 filings, first filed Apr 3, 2026, last Jul 2, 2026. Heidy King-Jones, Officer (see filing): sold $5.1M across 2 filings, first filed Sep 3, 2026, last Oct 2, 2026. Jeffrey W. Albers, Director: sold $2.4M across 1 filing, first filed Aug 10, 2026, last Aug 10, 2026.

Largest mark · tap a row for others

Peter Evan Harwin · Director

Sale $399,658,667

4,684,781 shares at $85.31 avg

Filed Jun 23, 2026

Close on filing date $97.05

SYRE daily closelast $92.97

Peter Evan Harwin · Director

$399.7M sold

Cameron Turtle · Chief Executive Officer

$11.4M sold

Michael Thomas Henderson · Director

$8.0M sold

Scott L. Burrows · Chief Financial Officer

$7.5M sold

Sheldon Sloan · Chief Medical Officer

$7.4M sold

Heidy King-Jones · Officer (see filing)

$5.1M sold

Jeffrey W. Albers · Director

$2.4M sold
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

31 filings in the last 12 months
Other insider activity (not market trades) · 21 records
  • Option exercises18 records
  • Tax withholding (sold to cover)1 record
  • Other2 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Counted once
When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.

Frequently asked questions

Has Spyre Therapeutics, Inc.'s CEO sold stock?

Yes. Cameron Turtle (CEO) sold 210,000 shares ($11.4M) between Nov 2025 and Oct 2026, all under a pre-arranged 10b5-1 plan.

How current is SYRE’s insider data?

These are SYRE Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

Build with AI

Track SYRE insider trades with your agent

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SYRE every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

Live market data from the Massive API and MCP.Get a free API key

Nothing on this page is investment advice. All data and content is provided for informational purposes under our Terms of Service.