STOCK TITAN

Spyre Therapeutics (SYRE) CMO trades 78,333 shares under 10b5-1 plan

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Spyre Therapeutics, Inc. Chief Medical Officer Sheldon Sloan reported coordinated stock trades involving both option exercise and share sales. On May 1, 2026, Sloan exercised stock options to acquire 78,333 shares of common stock at an exercise price of $27.46 per share.

That same day, Sloan executed multiple open-market sales totaling 78,333 shares of common stock at weighted average prices reported around the low- to mid-$70s per share, with detailed price ranges from $69.21 to $74.96 disclosed in the footnotes. The filing states these transactions were made under a pre-arranged Rule 10b5-1 trading plan adopted on June 20, 2025.

The option exercised covers a grant originally for 400,000 shares of common stock, with 321,667 option shares remaining outstanding after this exercise and an expiration date of October 1, 2034, subject to continued vesting based on employment.

Positive

  • None.

Negative

  • None.
Insider Sloan Sheldon
Role Chief Medical Officer
Sold 78,333 shs ($5.60M)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 78,333 $0.00 --
Exercise Common Stock 78,333 $27.46 $2.15M
Sale Common Stock 21,306 $69.53 $1.48M
Sale Common Stock 19,656 $70.61 $1.39M
Sale Common Stock 8,777 $71.56 $628K
Sale Common Stock 12,777 $72.94 $932K
Sale Common Stock 10,358 $73.74 $764K
Sale Common Stock 5,059 $74.60 $377K
Sale Common Stock 400 $75.37 $30K
Holdings After Transaction: Stock Option (Right to Buy) — 321,667 shares (Direct, null); Common Stock — 78,333 shares (Direct, null)
Footnotes (1)
  1. This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on June 20, 2025. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $69.21 to $70.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $70.21 to $71.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $71.21 to $72.19, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $72.21 to $73.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $73.21 to $74.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $74.21 to $74.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range. This option represents the right to purchase 400,000 shares of the Issuer's common stock, one quarter of vested and became exercisable on October 1, 2025, with the remaining three quarters vesting in monthly installments over the following three years, subject to the Reporting Person's continued employment with the Issuer.
Shares sold 78,333 shares Open-market sales of common stock on May 1, 2026
Sale price ranges $69.21–$74.96 per share Price ranges for multiple sale transactions, weighted averages reported
Option exercise size 78,333 shares Common stock acquired via option exercise on May 1, 2026
Option exercise price $27.46 per share Exercise price for Stock Option (Right to Buy)
Original option grant 400,000 shares Right to purchase common stock under option grant
Remaining option shares 321,667 shares Underlying shares remaining after the reported option exercise
Option expiration October 1, 2034 Expiration date of the Stock Option (Right to Buy)
10b5-1 plan adoption June 20, 2025 Adoption date of pre-arranged trading plan for sales
Rule 10b5-1 trading plan financial
"This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on June 20, 2025."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported above is a weighted average price. The shares were sold in multiple transactions..."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (Right to Buy) financial
"security_title": "Stock Option (Right to Buy)""
vesting financial
"one quarter of vested and became exercisable on October 1, 2025, with the remaining three quarters vesting in monthly installments"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
expiration date financial
""expiration_date": "2034-10-01T00:00:00.000Z""
The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Sloan Sheldon

(Last)(First)(Middle)
221 CRESCENT STREET, BUILDING 23
SUITE 105

(Street)
WALTHAM MASSACHUSETTS 02453

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Spyre Therapeutics, Inc. [ SYRE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Medical Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/01/2026M(1)78,333A$27.4678,333D
Common Stock05/01/2026S(1)21,306D$69.53(2)57,027D
Common Stock05/01/2026S(1)19,656D$70.61(3)37,371D
Common Stock05/01/2026S(1)8,777D$71.56(4)28,594D
Common Stock05/01/2026S(1)12,777D$72.94(5)15,817D
Common Stock05/01/2026S(1)10,358D$73.74(6)5,459D
Common Stock05/01/2026S(1)5,059D$74.6(7)400D
Common Stock05/01/2026S(1)400D$75.370D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$27.4605/01/2026M(1)78,333 (8)10/01/2034Common Stock78,333$0321,667D
Explanation of Responses:
1. This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on June 20, 2025.
2. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $69.21 to $70.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range.
3. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $70.21 to $71.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
4. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $71.21 to $72.19, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
5. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $72.21 to $73.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
6. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $73.21 to $74.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
7. The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $74.21 to $74.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
8. This option represents the right to purchase 400,000 shares of the Issuer's common stock, one quarter of vested and became exercisable on October 1, 2025, with the remaining three quarters vesting in monthly installments over the following three years, subject to the Reporting Person's continued employment with the Issuer.
Remarks:
/s/ Heidy King-Jones, as Attorney-in-Fact05/01/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Spyre Therapeutics (SYRE) report for Sheldon Sloan?

Spyre Therapeutics reported that Chief Medical Officer Sheldon Sloan exercised stock options for 78,333 shares at $27.46 per share and sold 78,333 shares of common stock in multiple open-market transactions at weighted average prices in the low- to mid-$70s.

Were Sheldon Sloan’s Spyre Therapeutics (SYRE) share sales pre-planned?

Yes. The filing states the sales were executed pursuant to a Rule 10b5-1 trading plan adopted on June 20, 2025. Such plans pre-schedule trades, indicating these transactions were arranged in advance rather than timed discretionarily around short-term market movements.

What stock option did Sheldon Sloan exercise at Spyre Therapeutics (SYRE)?

Sloan exercised a Stock Option (Right to Buy) covering 78,333 shares of common stock at an exercise price of $27.46 per share. The option grant originally represented the right to purchase 400,000 shares, subject to a vesting schedule tied to continued employment.

How many Spyre Therapeutics (SYRE) option shares remain from Sloan’s grant?

After exercising 78,333 shares, the option position shows 321,667 underlying shares remaining. According to the disclosure, this option to buy common stock expires on October 1, 2034, with remaining portions vesting over time with continued employment.

At what prices did Sheldon Sloan sell Spyre Therapeutics (SYRE) shares?

Each reported sale shows a weighted average price, with individual trades executed in ranges between $69.21 and $74.96 per share. The Form 4 notes Sloan will provide full breakdowns of shares sold at each separate price within those ranges upon request.