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Burns John Thomas

Disclosed activity across 1 company

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69638
SEC CIK
0001568734

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
SELLAS Life Sciences Group, Inc.SLS · Entity 4313CFOJanuary 07, 2026January 09, 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.

SELLAS Life Sciences Group, Inc.

Report date January 07, 2026 · Filed January 09, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect554,327 Reported balance After 2026-01-07 transaction · row 1
1 source row

Row 1 · 2026-01-07 · Grant · Acquired 300,000 · Balance 554,327

F1: The Reporting Person received an award of 300,000 restricted stock units on January 7, 2026, which shall vest as follows: (i) 25% on December 1, 2026 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: The Reporting Person received an award of 300,000 restricted stock units on January 7, 2026, which shall vest as follows: (i) 25% on December 1, 2026 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each 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
January 07, 2026 Filed Jan 9, 2026 21:33 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 300,000 $0.00 $0.00
Disclosure

SEC source: 0001104659-26-002502 · tm262627-3_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 554,327

F1 · shares: The Reporting Person received an award of 300,000 restricted stock units on January 7, 2026, which shall vest as follows: (i) 25% on December 1, 2026 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
December 03, 2025 Filed Dec 5, 2025 21:05 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 OtherCommon Stock 58,592 $1.50 $87,888.00
Disclosure

SEC source: 0001104659-25-118878 · tm2532693-2_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 254,327

F1 · kind: Transaction relates to shares of common stock withheld by the SELLAS Life Sciences Group, Inc. (the "Issuer") to cover tax withholding obligations of the Reporting Person in connection with the vesting of Restricted Stock Units ("RSUs").

F2 · shares: Represents the number shares of common stock withheld by the Issuer to cover tax withholding obligations of the Reporting Person in connection with the vesting of RSUs.

Read SEC document
January 10, 2025 Filed Jan 14, 2025 22:34 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option (Right to Buy) · Derivative 169,500 $0.00 Strike: $0.95 $0.00
Disclosure

SEC source: 0001104659-25-003502 · tm253166-8_4seq1.xml · derivative · entry 3

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,500

Underlying: Common Stock · 169,500 shares

Expires 2035-01-10

F3 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the January 10, 2025 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

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January 10, 2025 Filed Jan 14, 2025 22:34 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 81,300 $0.00 $0.00
Disclosure

SEC source: 0001104659-25-003502 · tm253166-8_4seq1.xml · nonDerivative · entry 2

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 299,062

F2 · shares: The Reporting Person received an award of 81,300 restricted stock units on January 10, 2025, which shall vest in full on December 1, 2025, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
January 10, 2025 Filed Jan 14, 2025 22:34 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 113,000 $0.00 $0.00
Disclosure

SEC source: 0001104659-25-003502 · tm253166-8_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 217,762

F1 · shares: The Reporting Person received an award of 113,000 restricted stock units on January 10, 2025, which shall vest as follows: (i) 25% on December 1, 2025 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
December 04, 2024 Filed Dec 5, 2024 22:05 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 OtherCommon Stock 7,165 $1.13 $8,096.45
Disclosure

SEC source: 0001104659-24-125942 · tm2430303-1_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,762

F1 · kind: Transaction relates to shares of common stock withheld by the SELLAS Life Sciences Group, Inc. (the "Issuer") to cover tax withholding obligations of the Reporting Person in connection with the vesting of Restricted Stock Units ("RSUs").

F2 · shares: Represents the number shares of common stock withheld by the Issuer to cover tax withholding obligations of the Reporting Person in connection with the vesting of RSUs.

Read SEC document
January 22, 2024 Filed Jan 25, 2024 11:00 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option (Right to Buy) · Derivative 75,000 $0.00 Strike: $0.52 $0.00
Disclosure

SEC source: 0001104659-24-006379 · tm243935-1_4seq1.xml · derivative · entry 2

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2034-01-22

F2 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the January 22, 2024 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

Read SEC document
January 22, 2024 Filed Jan 25, 2024 11:00 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 47,000 $0.00 $0.00
Disclosure

SEC source: 0001104659-24-006379 · tm243935-1_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,927

F1 · shares: The Reporting Person received an award of 47,000 restricted stock units on January 22, 2024, which shall vest as follows: (i) 25% on December 1, 2024 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
December 06, 2023 Filed Dec 8, 2023 21:10 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 OtherClass A Common Stock 2,929 $1.08 $3,163.32
Disclosure

SEC source: 0001104659-23-124686 · tm2332459-1_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,927

F1 · kind: Transaction relates to shares of common stock withheld by SELLAS Life Sciences Group, Inc. (the "Issuer") to cover tax withholding obligations of the Reporting Person in connection with the vesting of Restricted Stock Units ("RSUs").

F2 · shares: Represents the number shares of common stock withheld by the Issuer to cover tax withholding obligations of the Reporting Person in connection with the vesting of RSUs.

Read SEC document
February 02, 2023 Filed Feb 3, 2023 22:17 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option Right to Buy) · Derivative 75,000 $0.00 Strike: $3.34 $0.00
Disclosure

SEC source: 0001104659-23-010643 · tm235353d8_4seq1.xml · derivative · entry 2

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2033-02-02

F2 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the February 2, 2023 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

Read SEC document
February 02, 2023 Filed Feb 3, 2023 22:17 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 20,000 $0.00 $0.00
Disclosure

SEC source: 0001104659-23-010643 · tm235353d8_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,347

F1 · shares: The Reporting Person received an award of 20,000 restricted stock units on February 2, 2023, which shall vest as follows: (i) 25% on December 1, 2023 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
December 05, 2022 Filed Dec 5, 2022 21:13 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 SaleClass A Common Stock 1,159 $2.59 $3,001.81
Disclosure

SEC source: 0001104659-22-124566 · tm2232008-2_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · Senior VP, Finance & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,347

F1 · shares: Represents the number shares of common stock required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

Read SEC document
January 31, 2022 Filed Feb 1, 2022 22:05 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option (Right to Buy) · Derivative 36,000 $0.00 Strike: $5.34 $0.00
Disclosure

SEC source: 0001104659-22-010391 · tm225088-1_4seq1.xml · derivative · entry 2

Burns John Thomas · CIK 0001568734 · Senior VP, Finance & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,000

Underlying: Common Stock · 36,000 shares

Expires 2032-01-31

F2 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the January 31, 2022 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

Read SEC document
January 31, 2022 Filed Feb 1, 2022 22:05 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 9,600 $0.00 $0.00
Disclosure

SEC source: 0001104659-22-010391 · tm225088-1_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · Senior VP, Finance & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,244

F1 · shares: The Reporting Person received an award of 9,600 restricted stock units on January 31, 2022, which shall vest as follows: (i) 25% on December 1, 2022 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
December 02, 2021 Filed Dec 3, 2021 22:13 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 SaleCommon Stock 231 $6.27 $1,447.75
Disclosure

SEC source: 0001104659-21-146421 · tm2134552-4_4seq1.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · VP, Finance & Corp Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,644

F1 · shares: Represents the number shares of common stock required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reflects the weighted average sale price of the shares of common stock sold. These shares of common stock were sold in multiple transactions at prices ranging from $6.25 to $6.27, inclusive, per share of common stock. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares of common stock sold at each price.

Read SEC document
March 04, 2021 Filed Mar 8, 2021 21:28 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option (Right to Buy) · Derivative 17,250 $0.00 Strike: $8.00 $0.00
Disclosure

SEC source: 0001104659-21-033294 · tm218923d3_4.xml · derivative · entry 2

Burns John Thomas · CIK 0001568734 · VP, Finance & Corp Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,250

Underlying: Common Stock · 17,250 shares

Expires 2031-03-04

F2 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the March 4, 2021 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

Read SEC document
March 04, 2021 Filed Mar 8, 2021 21:28 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 2,875 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-033294 · tm218923d3_4.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · VP, Finance & Corp Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,875

F1 · shares: The Reporting Person received an award of 2,875 restricted stock units on March 4, 2021, which shall vest as follows: (i) 25% on December 1, 2021 and (ii) 25% on each December 1 thereafter until fully vested, provided that the Reporting Person remains in service with the Issuer through each such vesting date.

Read SEC document
March 12, 2020 Filed Mar 17, 2020 01:17 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option (Right to Buy) · Derivative 10,000 $0.00 Strike: $1.89 $0.00
Disclosure

SEC source: 0001104659-20-034284 · tm2012902-1_form4.xml · derivative · entry 2

Burns John Thomas · CIK 0001568734 · VP, Finance & Corp Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2030-03-12

F2 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the March 12, 2020 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

Read SEC document
March 12, 2020 Filed Mar 17, 2020 01:17 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantCommon Stock 15,000 $0.00 $0.00
Disclosure

SEC source: 0001104659-20-034284 · tm2012902-1_form4.xml · nonDerivative · entry 1

Burns John Thomas · CIK 0001568734 · VP, Finance & Corp Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

F1 · shares: The reporting person received an award of 15,000 restricted stock units on March 12, 2020, which shall vest as follows: (i) 50% on meeting the primary endpoint in Phase 3 REGAL study, provided that if such endpoint is met prior to March 12, 2021, such vesting will not occur until March 12, 2021 and (ii) 50% upon approval by the FDA of galinpepimut-S.

Read SEC document
March 14, 2019 Filed Mar 18, 2019 23:03 UTC SELLAS Life Sciences Group, Inc. SLS · Entity 4313 GrantStock Option (Right to Buy) · Derivative 90,000 $0.00 Strike: $1.38 $0.00
Disclosure

SEC source: 0000899243-19-008201 · doc4.xml · derivative · entry 1

Burns John Thomas · CIK 0001568734 · VP, Finance & Corp Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,000

Underlying: Common Stock · 90,000 shares

Expires 2029-03-14

F1 · derivative.exercise_date: One-quarter (1/4) of the option shares will vest and became exercisable one year from the March 14, 2019 grant date, and the remainder will vest and become exercisable in equal monthly installments for thirty-six (36) months thereafter, provided that the Reporting Person remains in service with the Issuer through each such monthly vesting date.

Read SEC document
January 17, 2017 Filed Jan 19, 2017 22:12 UTC SELLAS Life Sciences Group, Inc. GALE · Entity 4313 GrantStock Option (right to buy) · Derivative 15,000 $0.00 Strike: $1.81 $0.00
Disclosure

SEC source: 0001394548-17-000001 · primary_doc.xml · derivative · entry 1

Burns John Thomas · CIK 0001568734 · Vice President, Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 15,000 shares

Expires 2027-01-17

F1 · security: Granted pursuant to the Issuer's 2016 Incentive Plan.

F2 · derivative.exercise_date: This stock option will vest in 16 equal, quarterly installments over four years beginning three months from the date of grant, so long as the Reporting Person remains in the company's continuous employ through the vesting period.

Read SEC document

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