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Sullivan Christopher Ryan

Disclosed activity across 1 company

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21663
SEC CIK
0001810417

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Avalo Therapeutics, Inc.AVTX · Entity 4936Chief Financial OfficerSeptember 16, 2026September 18, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Avalo Therapeutics, Inc.

Report date September 16, 2026 · Filed September 18, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect39,900 Ending reported balance After 2026-09-16 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-09-16 · Exercise / conversion · Acquired 12,394 · Balance 52,294

F1: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

Row 2 · 2026-09-16 · Sale · Disposed 12,394 · Balance 39,900

F1: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F2: The reported securities were sold in multiple transactions at prices ranging from $15.91 to $16.65. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $9.88 · Expires 2034-08-13Direct83,848 Reported balance After 2026-09-16 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-09-16 · Exercise / conversion · Disposed 12,394 · Balance 83,848

F1: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F3: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F2: The reported securities were sold in multiple transactions at prices ranging from $15.91 to $16.65. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

F3: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 16, 2026 Filed Sep 18, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 12,394 $0.00 Strike: $9.88 $0.00
Disclosure

SEC source: 0001810417-26-000023 · form4-09182026_040901.xml · derivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,848

Underlying: Common Stock · 12,394 shares

Expires 2034-08-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F3 · derivative.exercise_date: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
September 16, 2026 Filed Sep 18, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 12,394 $16.33 $202,437.40
Disclosure

SEC source: 0001810417-26-000023 · form4-09182026_040901.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,900

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $15.91 to $16.65. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
September 16, 2026 Filed Sep 18, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 12,394 $9.88 $122,452.72
Disclosure

SEC source: 0001810417-26-000023 · form4-09182026_040901.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,294

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

Read SEC document
September 10, 2026 Filed Sep 11, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 10,185 $0.00 Strike: $8.04 $0.00
Disclosure

SEC source: 0001810417-26-000021 · form4-09112026_040901.xml · derivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 105,815

Underlying: Common Stock · 10,185 shares

Expires 2035-01-28

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F3 · derivative.exercise_date: The stock option vests twenty-five percent (25%) on January 28, 2026 and the remainder will vest in equal monthly installments over the following three (3) years, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
September 10, 2026 Filed Sep 11, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 10,185 $17.62 $179,456.64
Disclosure

SEC source: 0001810417-26-000021 · form4-09112026_040901.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,900

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $17.17 to $17.95. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
September 10, 2026 Filed Sep 11, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 10,185 $8.04 $81,887.40
Disclosure

SEC source: 0001810417-26-000021 · form4-09112026_040901.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,085

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

Read SEC document
August 18, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 31,031 $0.00 Strike: $9.88 $0.00
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · derivative · entry 9

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,242

Underlying: Common Stock · 31,031 shares

Expires 2034-08-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
August 18, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 31,031 $20.05 $622,323.60
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · nonDerivative · entry 6

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,900

F4 · price: The reported securities were sold in multiple transactions at prices ranging from $20.00 to $20.265. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
August 18, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 31,031 $9.88 $306,586.28
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · nonDerivative · entry 5

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,931

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 2,876 $0.00 Strike: $9.88 $0.00
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · derivative · entry 8

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 127,273

Underlying: Common Stock · 2,876 shares

Expires 2034-08-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 37,945 $0.00 Strike: $9.88 $0.00
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · derivative · entry 7

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 130,149

Underlying: Common Stock · 37,945 shares

Expires 2034-08-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F5 · derivative.exercise_date: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 3,749 $19.94 $74,762.18
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · nonDerivative · entry 4

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,900

F3 · price: The reported securities were sold in multiple transactions at prices ranging from $19.70 to $20.02. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 37,945 $19.85 $753,333.47
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · nonDerivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,649

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $19.16 to $20.02. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 2,876 $9.88 $28,414.88
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 81,594

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
August 17, 2026 Filed Aug 19, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 37,945 $9.88 $374,896.60
Disclosure

SEC source: 0001810417-26-000019 · form4-08192026_040813.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 78,718

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

Read SEC document
June 10, 2026 Filed Jun 12, 2026 20:36 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Tax withholdingCommon Stock 138 $13.10 $1,807.80
Disclosure

SEC source: 0001810417-26-000016 · form4-06122026_080641.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,773

F1 · balance_after: Includes 588 shares acquired pursuant to the Issuer's Employee Stock Purchase Plan as a part of this reporting transaction.

Read SEC document
May 21, 2026 Filed May 26, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantCommon Stock 39,900 $0.00 $0.00
Disclosure

SEC source: 0001810417-26-000014 · form4-05262026_040507.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,323

F1 · kind: Represents performance stock units ("PSUs") granted to the Reporting Person on August 19, 2025. Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon the achievement of certain performance goals. On May 21, 2026, the Compensation Committee of the Issuer certified achievement of such performance goals. As a result, the shares subject to the PSUs shall fully vest on August 19, 2028, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:05 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 18,606 $0.00 Strike: $9.88 $0.00
Disclosure

SEC source: 0001810417-26-000012 · form4-05112026_040503.xml · derivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 168,094

Underlying: Common Stock · 18,606 shares

Expires 2034-08-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F3 · derivative.exercise_date: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:05 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 18,606 $24.12 $448,817.65
Disclosure

SEC source: 0001810417-26-000012 · form4-05112026_040503.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 423

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $24.05 to $24.23. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:05 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 18,606 $9.88 $183,827.28
Disclosure

SEC source: 0001810417-26-000012 · form4-05112026_040503.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,029

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionStock Option (Right to Buy) · Derivative 47,000 $0.00 Strike: $8.04 $0.00
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · derivative · entry 7

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 116,000

Underlying: Common Stock · 47,000 shares

Expires 2035-01-28

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F7 · derivative.exercise_date: The stock option vests twenty-five percent (25%) on January 28, 2026 and the remainder will vest in equal monthly installments over the following three (3) years, subject to the Reporting Person's continued service on such vesting date.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 8,900 $22.57 $200,913.05
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · nonDerivative · entry 6

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 423

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F6 · price: The reported securities were sold in multiple transactions at prices ranging from $22.26 to $22.88. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 9,219 $21.37 $197,008.19
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · nonDerivative · entry 5

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,323

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F5 · price: The reported securities were sold in multiple transactions at prices ranging from $21.10 to $21.90. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 2,700 $20.76 $56,052.00
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · nonDerivative · entry 4

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,542

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F4 · price: The reported securities were sold in multiple transactions at prices ranging from $20.04 to $20.81. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 12,347 $19.28 $238,093.37
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · nonDerivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,242

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F3 · price: The reported securities were sold in multiple transactions at prices ranging from $19.02 to $19.91. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 13,834 $18.55 $256,655.29
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 33,589

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $17.95 to $18.90. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
May 06, 2026 Filed May 7, 2026 20:16 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 47,000 $8.04 $377,880.00
Disclosure

SEC source: 0001810417-26-000010 · form4-05072026_080542.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 47,423

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

Read SEC document
April 30, 2026 Filed May 1, 2026 20:37 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 8,457 $13.23 $111,853.13
Disclosure

SEC source: 0001810417-26-000008 · form4-05012026_080546.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 423

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F3 · price: The reported securities were sold in multiple transactions at prices ranging from $12.61 to $13.54. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
April 29, 2026 Filed May 1, 2026 20:37 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 8,458 $13.09 $110,736.37
Disclosure

SEC source: 0001810417-26-000008 · form4-05012026_080546.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,880

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $12.74 to $13.50. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Read SEC document
April 02, 2026 Filed Apr 3, 2026 19:14 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 1,780 $17.57 $31,269.97
Disclosure

SEC source: 0001810417-26-000006 · form4-04032026_070439.xml · nonDerivative · entry 4

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,338

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F5 · price: The reported securities were sold in multiple transactions at prices ranging from $17.39 to $17.80. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

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April 02, 2026 Filed Apr 3, 2026 19:14 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 6,200 $17.02 $105,553.14
Disclosure

SEC source: 0001810417-26-000006 · form4-04032026_070439.xml · nonDerivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,118

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F4 · price: The reported securities were sold in multiple transactions at prices ranging from $16.385 to $17.37. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

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April 01, 2026 Filed Apr 3, 2026 19:14 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 7,479 $16.83 $125,840.91
Disclosure

SEC source: 0001810417-26-000006 · form4-04032026_070439.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 25,318

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F3 · price: The reported securities were sold in multiple transactions at prices ranging from $16.45 to $17.38. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

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April 01, 2026 Filed Apr 3, 2026 19:14 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 SaleCommon Stock 500 $15.86 $7,929.00
Disclosure

SEC source: 0001810417-26-000006 · form4-04032026_070439.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,797

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 12, 2025.

F2 · price: The reported securities were sold in multiple transactions at prices ranging from $15.24 to $16.21. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

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March 28, 2026 Filed Mar 31, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionRestricted Stock Units · Derivative 24,200 $0.00 $0.00
Disclosure

SEC source: 0001810417-26-000004 · form4-03312026_080330.xml · derivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,200

Underlying: Common Stock · 24,200 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: On August 13, 2024, the Reporting Person was granted 72,600 restricted stock units, vesting 1/3 on March 28, 2025, March 28, 2026, and March 28, 2027, subject to the Reporting Person's continued service on such vesting date.

F2 · derivative.expiration_date: On August 13, 2024, the Reporting Person was granted 72,600 restricted stock units, vesting 1/3 on March 28, 2025, March 28, 2026, and March 28, 2027, subject to the Reporting Person's continued service on such vesting date.

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March 28, 2026 Filed Mar 31, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Tax withholdingCommon Stock 8,241 $13.89 $114,467.49
Disclosure

SEC source: 0001810417-26-000004 · form4-03312026_080330.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,297

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March 28, 2026 Filed Mar 31, 2026 20:10 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 24,200 Not disclosed Not disclosed
Disclosure

SEC source: 0001810417-26-000004 · form4-03312026_080330.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,538

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Restricted stock units convert into common stock on a one-for-one basis.

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February 26, 2026 Filed Mar 2, 2026 21:22 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 105,000 $0.00 Strike: $17.64 $0.00
Disclosure

SEC source: 0001810417-26-000002 · form4-03022026_090301.xml · derivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,000

Underlying: Common Stock · 105,000 shares

Expires 2036-02-26

F1 · derivative.exercise_date: The stock option vests twenty-five percent (25%) on February 26, 2027 and the remainder will vest in equal monthly installments over the following three (3) years, subject to the Reporting Person's continued service on such vesting date.

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December 10, 2025 Filed Dec 12, 2025 21:17 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Tax withholdingCommon Stock 155 $4.10 $635.50
Disclosure

SEC source: 0001470831-25-000409 · form4.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,338

F1 · balance_after: Includes 417 additional shares acquired pursuant to the Issuer's Employee Stock Purchase Plan as a part of this reporting transaction.

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March 28, 2025 Filed Apr 1, 2025 20:11 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionRestricted Stock Units · Derivative 24,200 $0.00 $0.00
Disclosure

SEC source: 0001578563-25-000198 · primary_doc.xml · derivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,400

Underlying: Common Stock · 24,200 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: On August 13, 2024, the Reporting Person was granted 72,600 restricted stock units, vesting 1/3 on March 28, 2025, March 28, 2026, and March 28, 2027, subject to the Reporting Person's continued service on such vesting date.

F2 · derivative.expiration_date: On August 13, 2024, the Reporting Person was granted 72,600 restricted stock units, vesting 1/3 on March 28, 2025, March 28, 2026, and March 28, 2027, subject to the Reporting Person's continued service on such vesting date.

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March 28, 2025 Filed Apr 1, 2025 20:11 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Tax withholdingCommon Stock 7,285 $8.46 $61,631.10
Disclosure

SEC source: 0001578563-25-000198 · primary_doc.xml · nonDerivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,921

Read SEC document
March 28, 2025 Filed Apr 1, 2025 20:11 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 Exercise / conversionCommon Stock 24,200 Not disclosed Not disclosed
Disclosure

SEC source: 0001578563-25-000198 · primary_doc.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,206

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Restricted stock units convert into common stock on a one-for-one basis.

Read SEC document
January 28, 2025 Filed Jan 30, 2025 22:43 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 163,000 $0.00 Strike: $8.04 $0.00
Disclosure

SEC source: 0001578563-25-000028 · primary_doc.xml · derivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,000

Underlying: Common Stock · 163,000 shares

Expires 2035-01-28

F1 · derivative.exercise_date: The stock option vests twenty-five percent (25%) on January 28, 2026 and the remainder will vest in equal monthly installments over the following three (3) years, subject to the Reporting Person's continued service on such vesting date.

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August 13, 2024 Filed Aug 14, 2024 20:11 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantRestricted Stock Units · Derivative 72,600 $0.00 $0.00
Disclosure

SEC source: 0001578563-24-000364 · primary_doc.xml · derivative · entry 3

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,600

Underlying: Common Stock · 72,600 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock upon the vesting date.

F3 · derivative.exercise_date: The RSUs vest 1/3 on March 28, 2025, March 28, 2026, and March 28, 2027, subject to the Reporting Person's continued service on such vesting date.

F3 · derivative.expiration_date: The RSUs vest 1/3 on March 28, 2025, March 28, 2026, and March 28, 2027, subject to the Reporting Person's continued service on such vesting date.

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August 13, 2024 Filed Aug 14, 2024 20:11 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 186,700 $0.00 Strike: $9.88 $0.00
Disclosure

SEC source: 0001578563-24-000364 · primary_doc.xml · derivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 186,700

Underlying: Common Stock · 186,700 shares

Expires 2034-08-13

F1 · derivative.exercise_date: The stock option vests 25% on March 28, 2025, and 1/36 monthly thereafter, subject to the Reporting Person's continued service on such vesting date.

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June 09, 2023 Filed Jun 13, 2023 20:41 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 PurchaseCommon Stock 511 $3.42 $1,747.62
Disclosure

SEC source: 0001628280-23-021962 · wk-form4_1686688870.xml · nonDerivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,262

F1 · shares: These shares were acquired under the Issuer's 2016 Employee Stock Purchase Plan.

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May 15, 2023 Filed May 17, 2023 11:44 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 40,000 $0.00 Strike: $2.75 $0.00
Disclosure

SEC source: 0001628280-23-018557 · wk-form4_1684323885.xml · derivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2033-05-15

F1 · derivative.exercise_date: The stock option will vest in full on May 15, 2024, subject to the Reporting Person's continued service on such vesting date.

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February 13, 2023 Filed Feb 15, 2023 21:19 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 40,000 $0.00 Strike: $2.98 $0.00
Disclosure

SEC source: 0001628280-23-003708 · wf-form4_167649596254341.xml · derivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2033-02-13

F1 · derivative.exercise_date: One-fourth of the shares subject to the stock option will vest on the first anniversary of the date of grant, and the remaining three-fourths of the shares subject to the stock option will vest in equal monthly installments over the following 36 months, subject to the Reporting Person's continued service through each applicable vesting date.

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October 05, 2022 Filed Oct 7, 2022 20:01 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 25,000 $0.00 Strike: $3.97 $0.00
Disclosure

SEC source: 0001628280-22-026157 · wf-form4_166517288861221.xml · derivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires 2032-10-05

F1 · derivative.exercise_date: The stock option will vest in full on October 5, 2023, subject to the Reporting Person's continued service on such vesting date.

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March 08, 2022 Filed Mar 10, 2022 22:50 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 50,000 $0.00 Strike: $0.70 $0.00
Disclosure

SEC source: 0001578563-22-000006 · primary_doc.xml · derivative · entry 2

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires 2032-03-08

F2 · derivative.exercise_date: The stock option will vest in full on March 8, 2023, subject to the Reporting Person's continued service through the vesting date.

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March 08, 2022 Filed Mar 10, 2022 22:50 UTC Avalo Therapeutics, Inc. AVTX · Entity 4936 GrantStock Option (Right to Buy) · Derivative 400,000 $0.00 Strike: $0.70 $0.00
Disclosure

SEC source: 0001578563-22-000006 · primary_doc.xml · derivative · entry 1

Sullivan Christopher Ryan · CIK 0001810417 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 shares

Expires 2032-03-08

F1 · derivative.exercise_date: One-fourth of the shares subject to the stock option will vest on the first anniversary of the date of grant, and the remaining three-fourths of the shares subject to the stock option will vest in equal monthly installments over the following 36 months, subject to the Reporting Person's continued service through each applicable vesting date.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.