Insider Ledger

SYRE insider buying and SEC filings, explained

Spyre Therapeutics, Inc. · CIK 1636282

Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov

Company profile

Exchanges
Nasdaq
Industry (SIC)
Pharmaceutical Preparations
State of incorporation
DE
Fiscal year end
Dec 31
Former names
Aeglea BioTherapeutics, Inc.

Insider activity in the last 12 months

Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$42.0M

Insider purchases and sales, last 12 months

TradedTypeWhat was filedSource
Oct 1, 2026Planned (10b5-1)Heidy King-Jones (Chief Legal Officer) sold 28,933 shares at about $91.03 ($2.6M), marked as a 10b5-1 plan trade. Holdings down 91% to 2,845 shares.SEC filing
Filed Oct 2, 2026, 9:30 PM ET
Oct 1, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $92.01 ($1.4M), marked as a 10b5-1 plan trade. Holdings down 3% to 537,540 shares.SEC filing
Filed Oct 2, 2026, 9:29 PM ET
Sep 30–Oct 1, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 25,000 shares between Sep 30 and Oct 1 at about $90.47 ($2.3M), marked as a 10b5-1 plan trade. Holdings down 24% to 79,762 shares.SEC filing
Filed Oct 2, 2026, 9:29 PM ET
Sep 1–2, 2026Planned (10b5-1)Heidy King-Jones (Officer) sold 28,399 shares between Sep 1 and Sep 2 at about $87.35 ($2.5M), marked as a 10b5-1 plan trade. Holdings down 91% to 2,845 shares.SEC filing
Filed Sep 3, 2026
Sep 1–2, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 25,732 shares between Sep 1 and Sep 2 at about $88.75 ($2.3M), marked as a 10b5-1 plan trade. Holdings down 24% to 79,762 shares.SEC filing
Filed Sep 3, 2026
Sep 1, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $87.29 ($1.3M), marked as a 10b5-1 plan trade. Holdings down 3% to 552,540 shares.SEC filing
Filed Sep 3, 2026
Aug 7, 2026Planned (10b5-1)Jeffrey W. Albers (Director) sold 23,000 shares directly and indirectly (by entity) at about $104.53 ($2.4M), marked as a 10b5-1 plan trade. Direct holdings down 100% to 0 shares.SEC filing
Filed Aug 10, 2026
Aug 3, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 7,500 shares at about $95.57 ($717K), marked as a 10b5-1 plan trade. Holdings down 7% to 97,994 shares.SEC filing
Filed Aug 5, 2026
Aug 3, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $95.51 ($1.4M), marked as a 10b5-1 plan trade. Holdings down 3% to 567,540 shares.SEC filing
Filed Aug 5, 2026
Jul 1, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 7,500 shares at about $87.74 ($658K), marked as a 10b5-1 plan trade. Holdings down 7% to 97,994 shares.SEC filing
Filed Jul 2, 2026
Jul 1, 2026Planned (10b5-1)Sheldon Sloan (Chief Medical Officer) sold 8,334 shares at about $87.70 ($731K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares.SEC filing
Filed Jul 2, 2026
Jul 1, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $87.69 ($1.3M), marked as a 10b5-1 plan trade. Holdings down 3% to 582,540 shares.SEC filing
Filed Jul 2, 2026
Jun 22, 2026Planned (10b5-1)Michael Thomas Henderson (Director) sold 20,000 shares at $100.00 ($2.0M), marked as a 10b5-1 plan trade. Holdings down 23% to 68,606 shares.SEC filing
Filed Jun 23, 2026
Jun 3, 2026Planned (10b5-1)Sheldon Sloan (Chief Medical Officer) sold 8,333 shares at $75.00 ($625K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares.SEC filing
Filed Jun 3, 2026
Jun 1, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $70.43 ($1.1M), marked as a 10b5-1 plan trade. Holdings down 2% to 597,540 shares.SEC filing
Filed Jun 3, 2026
Jun 1, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 7,500 shares at about $71.06 ($533K), marked as a 10b5-1 plan trade. Holdings down 7% to 97,994 shares.SEC filing
Filed Jun 3, 2026
May 8, 2026Planned (10b5-1)Michael Thomas Henderson (Director) sold 80,000 shares at about $74.40 ($6.0M), marked as a 10b5-1 plan trade. Holdings down 47% to 88,606 shares.SEC filing
Filed May 8, 2026
May 1, 2026Planned (10b5-1)Sheldon Sloan (Chief Medical Officer) sold 78,333 shares at about $71.50 ($5.6M), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares.SEC filing
Filed May 1, 2026
May 1, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 12,500 shares at $71.37 ($892K), marked as a 10b5-1 plan trade. Holdings down 11% to 97,994 shares.SEC filing
Filed May 1, 2026
May 1, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $71.37 ($1.1M), marked as a 10b5-1 plan trade. Holdings down 2% to 612,540 shares.SEC filing
Filed May 1, 2026
Apr 1, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 7,500 shares at about $49.34 ($370K), marked as a 10b5-1 plan trade. Holdings down 7% to 97,994 shares.SEC filing
Filed Apr 3, 2026
Apr 1, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $49.33 ($740K), marked as a 10b5-1 plan trade. Holdings down 2% to 627,540 shares.SEC filing
Filed Apr 3, 2026
Apr 1, 2026Planned (10b5-1)Sheldon Sloan (Chief Medical Officer) sold 7,958 shares at $50.00 ($398K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares.SEC filing
Filed Apr 3, 2026
Mar 3, 2026Planned (10b5-1)Scott L Burrows (CFO) sold 2,500 shares at about $40.65 ($102K), marked as a 10b5-1 plan trade. Holdings down 2% to 97,994 shares.SEC filing
Filed Mar 3, 2026
Mar 2, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $42.19 ($633K), marked as a 10b5-1 plan trade. Holdings down 2% to 642,540 shares.SEC filing
Filed Mar 3, 2026
Feb 2, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $32.80 ($492K), marked as a 10b5-1 plan trade. Holdings down 2% to 657,540 shares.SEC filing
Filed Feb 4, 2026
Jan 2, 2026Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $30.68 ($460K), marked as a 10b5-1 plan trade. Holdings down 2% to 671,907 shares.SEC filing
Filed Jan 6, 2026
Dec 1, 2025Planned (10b5-1)Cameron Turtle (CEO and Director) sold 15,000 shares at about $29.02 ($435K), marked as a 10b5-1 plan trade. Holdings down 2% to 686,907 shares.SEC filing
Filed Dec 3, 2025
Nov 3, 2025Planned (10b5-1)Cameron Turtle (CEO and Director) sold 45,000 shares at about $23.33 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 6% to 701,907 shares.SEC filing
Filed Nov 5, 2025

29 routine transactions (such as grants, option exercises or tax withholding) are not listed.

Cluster buys

No cluster buys in the last 12 months.

Red flags

No red flags in the last 12 months.

Key events

No key events in the last 12 months.

8-K filings, last 12 months

FiledItemsTagSource
Nov 3, 2026, 4:02 PM ET
8-K
Earnings released (Item 2.02)SEC filing

Red flags are objective triggers only: the item or form filed, never an opinion.

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