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Jeffries Sean

Disclosed activity across 1 company

Tapewire entity
70334
SEC CIK
0001848377

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Design Therapeutics, Inc.DSGN · Entity 4991Chief Operating OfficerJanuary 02, 2026January 05, 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.

Design Therapeutics, Inc.

Report date January 02, 2026 · Filed January 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $9.10 · Expires 2036-01-01Direct375,000 Reported balance After 2026-01-02 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-01-02 · Grant · Acquired 375,000 · Balance 375,000

F1: The shares subject to the option will vest as follows: 20% of the shares will vest on January 1, 2027, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

Filing footnotes · ownership attribution and instrument terms

F1: The shares subject to the option will vest as follows: 20% of the shares will vest on January 1, 2027, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

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 02, 2026 Filed Jan 5, 2026 21:13 UTC Design Therapeutics, Inc. DSGN · Entity 4991 GrantStock option (right to buy) · Derivative 375,000 $0.00 Strike: $9.10 $0.00
Disclosure

SEC source: 0001848377-26-000002 · form4-01052026_090157.xml · derivative · entry 1

Jeffries Sean · CIK 0001848377 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 375,000

Underlying: Common Stock · 375,000 shares

Expires 2036-01-01

F1 · derivative.exercise_date: The shares subject to the option will vest as follows: 20% of the shares will vest on January 1, 2027, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

Read SEC document
January 02, 2025 Filed Jan 7, 2025 00:00 UTC Design Therapeutics, Inc. DSGN · Entity 4991 GrantStock option (right to buy) · Derivative 260,000 $0.00 Strike: $6.17 $0.00
Disclosure

SEC source: 0001415889-25-000877 · form4-01062025_070125.xml · derivative · entry 1

Jeffries Sean · CIK 0001848377 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 260,000

Underlying: Common Stock · 260,000 shares

Expires 2035-01-01

F1 · derivative.exercise_date: The shares subject to the option will vest as follows: 20% of the shares will vest on January 1, 2026, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

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January 02, 2024 Filed Jan 5, 2024 21:40 UTC Design Therapeutics, Inc. DSGN · Entity 4991 GrantStock Option (right to buy) · Derivative 350,000 $0.00 Strike: $2.54 $0.00
Disclosure

SEC source: 0001209191-24-001039 · doc4.xml · derivative · entry 1

Jeffries Sean · CIK 0001848377 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,000

Underlying: Common Stock · 350,000 shares

Expires 2034-01-01

F1 · derivative.exercise_date: The shares subject to the option will vest as follows: 20% of the shares will vest on January 1, 2025, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

Read SEC document
February 01, 2023 Filed Feb 3, 2023 21:41 UTC Design Therapeutics, Inc. DSGN · Entity 4991 GrantStock Option (right to buy) · Derivative 140,000 $0.00 Strike: $7.97 $0.00
Disclosure

SEC source: 0001209191-23-006921 · doc4.xml · derivative · entry 1

Jeffries Sean · CIK 0001848377 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,000

Underlying: Common Stock · 140,000 shares

Expires 2033-01-31

F1 · derivative.exercise_date: The shares subject to the option will vest as follows: 20% of the shares will vest on February 1, 2024, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

Read SEC document
February 01, 2022 Filed Feb 3, 2022 00:51 UTC Design Therapeutics, Inc. DSGN · Entity 4991 GrantStock Option (right to buy) · Derivative 350,000 $0.00 Strike: $12.77 $0.00
Disclosure

SEC source: 0001209191-22-006581 · doc4.xml · derivative · entry 1

Jeffries Sean · CIK 0001848377 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 350,000

Underlying: Common Stock · 350,000 shares

Expires 2032-01-31

F1 · derivative.exercise_date: The shares subject to the option will vest as follows: 20% of the shares will vest on February 1, 2023, 20% of the shares will vest in equal monthly installments over the following 12 months, 30% of the shares will vest in equal monthly installments over the following 12 months, and 30% of the shares will vest in equal monthly installments over the following 12 months.

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March 30, 2021 Filed Apr 1, 2021 22:35 UTC Design Therapeutics, Inc. DSGN · Entity 4991 PurchaseCommon Stock 3,050 $20.00 $61,000.00
Disclosure

SEC source: 0001209191-21-024248 · doc4.xml · nonDerivative · entry 1

Jeffries Sean · CIK 0001848377 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By domestic partner

Disclosed balance after: 3,050

F1 · kind: The shares were purchased in the Issuer's initial public offering.

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.