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DeYoung Casi

Disclosed activity across 1 company

Tapewire entity
68680
SEC CIK
0001652066

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Shattuck Labs, Inc.STTK · Entity 5224Chief Business OfficerJanuary 25, 2026January 27, 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.

Shattuck Labs, Inc.

Report date January 25, 2026 · Filed January 27, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect73,480 Reported balance After 2026-01-25 transaction · row 1
1 source row

Row 1 · 2026-01-25 · Tax withholding · Disposed 2,286 · Balance 73,480

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 25, 2026 Filed Jan 27, 2026 16:08 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 2,286 $4.15 $9,486.90
Disclosure

SEC source: 0001193125-26-024409 · ownership.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,480

Read SEC document
January 10, 2026 Filed Jan 13, 2026 16:50 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantCommon Stock · Derivative 381,600 $0.00 Strike: $4.75 $0.00
Disclosure

SEC source: 0001193125-26-011853 · ownership.xml · derivative · entry 2

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 381,600

Underlying: Common Stock · 381,600 shares

Expires 2036-01-10

F1 · derivative.exercise_date: This option represents a right to purchase a total of 381,600 shares of the Issuer's common stock, one quarter of which will vest on January 10, 2027, with the remaining three quarters vesting in equal monthly installments through January 10, 2030, subject to the Reporting Person's continued service to the Issuer.

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January 10, 2026 Filed Jan 13, 2026 16:50 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 5,699 $4.75 $27,070.25
Disclosure

SEC source: 0001193125-26-011853 · ownership.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,766

Read SEC document
January 28, 2025 Filed Jan 28, 2025 18:08 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantCommon Stock · Derivative 194,300 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0000950170-25-010009 · ownership.xml · derivative · entry 2

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,300

Underlying: Common Stock · 194,300 shares

Expires 2035-01-28

F1 · derivative.exercise_date: This option represents a right to purchase a total of 194,300 shares of the Issuer's common stock, one quarter of which will vest on January 28, 2026, with the remaining three quarters vesting in equal monthly installments through January 28, 2029, subject to the Reporting Person's continued service to the Issuer.

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January 25, 2025 Filed Jan 28, 2025 18:08 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 2,297 $1.16 $2,664.52
Disclosure

SEC source: 0000950170-25-010009 · ownership.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,465

Read SEC document
January 10, 2025 Filed Jan 13, 2025 17:35 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 5,727 $1.19 $6,815.13
Disclosure

SEC source: 0000950170-25-004931 · ownership.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,762

Read SEC document
January 30, 2024 Filed Jan 31, 2024 16:05 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 2,008 $9.99 $20,059.92
Disclosure

SEC source: 0000950170-24-009376 · ownership.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,489

Read SEC document
January 10, 2024 Filed Jan 16, 2024 16:38 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantStock Option (Right to Buy) · Derivative 92,400 $0.00 Strike: $10.09 $0.00
Disclosure

SEC source: 0000950170-24-004660 · ownership.xml · derivative · entry 3

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,400

Underlying: Common Stock · 92,400 shares

Expires 2034-01-10

F2 · derivative.exercise_date: This option represents a right to purchase a total of 92,400 shares of the Issuer's common stock, one quarter of which will vest on January 10, 2025, with the remaining three quarters vesting in equal monthly installments through January 10, 2028, subject to the Reporting Person's continued service to the Issuer.

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January 10, 2024 Filed Jan 16, 2024 16:38 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 1,583 $10.09 $15,972.47
Disclosure

SEC source: 0000950170-24-004660 · ownership.xml · nonDerivative · entry 2

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,497

Read SEC document
January 10, 2024 Filed Jan 16, 2024 16:38 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantCommon Stock 46,200 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-004660 · ownership.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,080

F1 · shares: Consists of 46,200 restricted stock units, which will vest in four equal annual installments beginning on January 10, 2025, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
January 25, 2023 Filed Jan 27, 2023 18:06 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantStock Option (Right to Buy) · Derivative 54,200 $0.00 Strike: $3.57 $0.00
Disclosure

SEC source: 0000899243-23-002883 · doc4.xml · derivative · entry 2

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,200

Underlying: Common Stock · 54,200 shares

Expires 2033-01-25

F2 · derivative.exercise_date: This option represents a right to purchase a total of 54,200 shares of the Issuer's common stock, one quarter of which will vest on January 25, 2024, with the remaining three quarters vesting in equal monthly installments through January 25, 2027, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
January 25, 2023 Filed Jan 27, 2023 18:06 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantCommon Stock 27,100 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-002883 · doc4.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,880

F1 · shares: Consists of 27,100 restricted stock units, which will vest in four equal annual installments beginning on January 25, 2024, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
January 10, 2023 Filed Jan 12, 2023 16:13 UTC Shattuck Labs, Inc. STTK · Entity 5224 Tax withholdingCommon Stock 1,583 $3.03 $4,796.49
Disclosure

SEC source: 0000899243-23-001684 · doc4.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,780

Read SEC document
January 10, 2022 Filed Jan 12, 2022 18:45 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantStock Option (Right to Buy) · Derivative 42,725 $0.00 Strike: $7.43 $0.00
Disclosure

SEC source: 0000899243-22-001798 · doc4.xml · derivative · entry 2

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,725

Underlying: Common Stock · 42,725 shares

Expires 2032-01-10

F2 · derivative.exercise_date: This option represents a right to purchase a total of 42,725 shares of the Issuer's common stock, one quarter of which will vest on January 10, 2023, with the remaining three quarters vesting in equal monthly installments through January 10, 2026, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
January 10, 2022 Filed Jan 12, 2022 18:45 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantCommon Stock 21,363 $0.00 $0.00
Disclosure

SEC source: 0000899243-22-001798 · doc4.xml · nonDerivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,363

F1 · shares: Consists of 21,363 restricted stock units, which will vest in four equal annual installments beginning on January 10, 2023, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
December 22, 2020 Filed Dec 28, 2020 16:55 UTC Shattuck Labs, Inc. STTK · Entity 5224 GrantStock Option (Right to Buy) · Derivative 18,743 $0.00 Strike: $53.02 $0.00
Disclosure

SEC source: 0000899243-20-035212 · doc4.xml · derivative · entry 1

DeYoung Casi · CIK 0001652066 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,743

Underlying: Common Stock · 18,743 shares

Expires 2030-12-22

F1 · derivative.exercise_date: This option represents a right to purchase a total of 18,743 shares of the Issuer's common stock, one quarter of which will vest on December 22, 2021, with the remaining three quarters vesting in equal monthly installments through December 22, 2024, subject to the Reporting Person's continued service to the Issuer.

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.