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DesRosier Thomas

Disclosed activity across 1 company

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22183
SEC CIK
0001435744

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Seres Therapeutics, Inc.MCRB · Entity 7191See RemarksAugust 15, 2026August 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.

Seres Therapeutics, Inc.

Report date August 15, 2026 · Filed August 18, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect8,117 Ending reported balance After 2026-08-17 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-08-15 · Exercise / conversion · Acquired 245 · Balance 8,199

F1: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

Row 2 · 2026-08-17 · Sale · Disposed 82 · Balance 8,117

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 instruction adopted by the reporting person on March 2, 2023, solely with the intent to cover taxes in connection with the vesting of the restricted stock units.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect265 Reported balance After 2026-08-15 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-08-15 · Exercise / conversion · Disposed 133 · Balance 265

F1: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3: The restricted stock units vested and settled as to 25% of the restricted stock units on February 15, 2024. The remainder of the restricted stock units have vested and settled or will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect667 Reported balance After 2026-08-15 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-08-15 · Exercise / conversion · Disposed 112 · Balance 667

F1: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4: The restricted stock units vested and settled as to 25% of the restricted stock units on February 15, 2025. The remainder of the restricted stock units have vested and settled or will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 instruction adopted by the reporting person on March 2, 2023, solely with the intent to cover taxes in connection with the vesting of the restricted stock units.

F3: The restricted stock units vested and settled as to 25% of the restricted stock units on February 15, 2024. The remainder of the restricted stock units have vested and settled or will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.

F4: The restricted stock units vested and settled as to 25% of the restricted stock units on February 15, 2025. The remainder of the restricted stock units have vested and settled or will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration 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
February 14, 2024 Filed Feb 17, 2024 02:48 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantRestricted Stock Units · Derivative 35,625 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-016712 · ownership.xml · derivative · entry 5

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 35,625

Underlying: Common Stock · 35,625 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F6 · derivative.exercise_date: The restricted stock units will vest and settle as to 25% of the restricted stock units on February 15, 2025. The remainder of the restricted stock units will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.

F6 · derivative.expiration_date: The restricted stock units will vest and settle as to 25% of the restricted stock units on February 15, 2025. The remainder of the restricted stock units will vest and settle in 12 equal quarterly installments thereafter. The restricted stock units have no expiration date.

Read SEC document
February 14, 2024 Filed Feb 17, 2024 02:48 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantStock Option (Right to Buy) · Derivative 287,905 $0.00 Strike: $1.10 $0.00
Disclosure

SEC source: 0000950170-24-016712 · ownership.xml · derivative · entry 4

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 287,905

Underlying: Common Stock · 287,905 shares

Expires 2034-02-13

F5 · derivative.exercise_date: The option will vest, if at all, in two substantially equal installments upon achievement of a 30-day trailing average public market closing price per share of the Issuer's common stock greater than or equal to $3.00 and $5.00, respectively.

Read SEC document
February 14, 2024 Filed Feb 17, 2024 02:48 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantStock Option (Right to Buy) · Derivative 213,750 $0.00 Strike: $1.10 $0.00
Disclosure

SEC source: 0000950170-24-016712 · ownership.xml · derivative · entry 3

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 213,750

Underlying: Common Stock · 213,750 shares

Expires 2034-02-13

F4 · derivative.exercise_date: The option will vest as to 25% of the shares on February 14, 2025. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
October 30, 2023 Filed Nov 1, 2023 01:39 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 SaleCommon Stock 4,156 $1.35 $5,610.60
Disclosure

SEC source: 0000899243-23-020076 · doc4.xml · nonDerivative · entry 2

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 113,891

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 instruction adopted by the reporting person on May 4, 2023, solely with the intent to cover taxes in connection with the vesting of the RSUs.

F3 · price: The price reported in column 4 is a weighted average of the price. These shares were sold in multiple transactions at prices ranging from $1.35 to $1.385, 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, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
October 27, 2023 Filed Nov 1, 2023 01:39 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionRestricted Stock Units · Derivative 13,501 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-020076 · doc4.xml · derivative · entry 4

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,500

Underlying: Common Stock · 13,501 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.

F4 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. The RSUs do not have an expiration date.

F1 · shares: On February 3, 2023, the reporting person was granted an award of 27,001 restricted stock units ("RSUs"), which vest in the form of shares of the Issuer's common stock in two substantially equal installments upon the satisfaction of certain performance criteria. On April 27, 2023 (the "Initial Milestone Date"), the Issuer's Administrator determined that the performance criteria for the first installment were met, resulting in the vesting and settlement of the award as to 13,501 RSUs on October 27, 2023, the date that was six months from the Initial Milestone Date. The remaining 13,500 RSUs shall vest on October 27, 2024, the date that is eighteen months from the Initial Milestone Date.

F1 · derivative.exercise_date: On February 3, 2023, the reporting person was granted an award of 27,001 restricted stock units ("RSUs"), which vest in the form of shares of the Issuer's common stock in two substantially equal installments upon the satisfaction of certain performance criteria. On April 27, 2023 (the "Initial Milestone Date"), the Issuer's Administrator determined that the performance criteria for the first installment were met, resulting in the vesting and settlement of the award as to 13,501 RSUs on October 27, 2023, the date that was six months from the Initial Milestone Date. The remaining 13,500 RSUs shall vest on October 27, 2024, the date that is eighteen months from the Initial Milestone Date.

F4 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. The RSUs do not have an expiration date.

Read SEC document
October 27, 2023 Filed Nov 1, 2023 01:39 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionCommon Stock 13,501 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-020076 · doc4.xml · nonDerivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 118,047

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: On February 3, 2023, the reporting person was granted an award of 27,001 restricted stock units ("RSUs"), which vest in the form of shares of the Issuer's common stock in two substantially equal installments upon the satisfaction of certain performance criteria. On April 27, 2023 (the "Initial Milestone Date"), the Issuer's Administrator determined that the performance criteria for the first installment were met, resulting in the vesting and settlement of the award as to 13,501 RSUs on October 27, 2023, the date that was six months from the Initial Milestone Date. The remaining 13,500 RSUs shall vest on October 27, 2024, the date that is eighteen months from the Initial Milestone Date.

Read SEC document
April 27, 2023 Filed Nov 1, 2023 01:39 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantRestricted Stock Units · Derivative 27,001 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-020076 · doc4.xml · derivative · entry 3

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,001

Underlying: Common Stock · 27,001 shares

Expires not disclosed

F4 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. The RSUs do not have an expiration date.

F1 · shares: On February 3, 2023, the reporting person was granted an award of 27,001 restricted stock units ("RSUs"), which vest in the form of shares of the Issuer's common stock in two substantially equal installments upon the satisfaction of certain performance criteria. On April 27, 2023 (the "Initial Milestone Date"), the Issuer's Administrator determined that the performance criteria for the first installment were met, resulting in the vesting and settlement of the award as to 13,501 RSUs on October 27, 2023, the date that was six months from the Initial Milestone Date. The remaining 13,500 RSUs shall vest on October 27, 2024, the date that is eighteen months from the Initial Milestone Date.

F1 · derivative.exercise_date: On February 3, 2023, the reporting person was granted an award of 27,001 restricted stock units ("RSUs"), which vest in the form of shares of the Issuer's common stock in two substantially equal installments upon the satisfaction of certain performance criteria. On April 27, 2023 (the "Initial Milestone Date"), the Issuer's Administrator determined that the performance criteria for the first installment were met, resulting in the vesting and settlement of the award as to 13,501 RSUs on October 27, 2023, the date that was six months from the Initial Milestone Date. The remaining 13,500 RSUs shall vest on October 27, 2024, the date that is eighteen months from the Initial Milestone Date.

F4 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. The RSUs do not have an expiration date.

Read SEC document
February 03, 2023 Filed Feb 7, 2023 22:45 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantStock Option (Right to Buy) · Derivative 85,000 $0.00 Strike: $5.50 $0.00
Disclosure

SEC source: 0000899243-23-004207 · doc4.xml · derivative · entry 2

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,000

Underlying: Common Stock · 85,000 shares

Expires 2033-02-02

F3 · derivative.exercise_date: The option will vest as to 25% of the shares on February 3, 2024. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
February 03, 2023 Filed Feb 7, 2023 22:45 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantRestricted Stock Units · Derivative 42,500 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-004207 · doc4.xml · derivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,500

Underlying: Common Stock · 42,500 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: The restricted stock units will vest and settle as to 25% of the restricted stock units on February 15, 2024. The remainder of the restricted stock units will vest and settle in 12 equal quarterly installments thereafter.

F2 · derivative.expiration_date: The restricted stock units will vest and settle as to 25% of the restricted stock units on February 15, 2024. The remainder of the restricted stock units will vest and settle in 12 equal quarterly installments thereafter.

Read SEC document
July 05, 2022 Filed Jul 6, 2022 23:29 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantCOMMON STOCK 63,492 $3.15 $199,999.80
Disclosure

SEC source: 0000899243-22-025521 · doc4.xml · nonDerivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,546

Read SEC document
February 04, 2022 Filed Feb 9, 2022 02:30 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantStock Option (Right to Buy) · Derivative 130,000 $0.00 Strike: $7.38 $0.00
Disclosure

SEC source: 0000899243-22-005314 · doc4.xml · derivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,000

Underlying: Common Stock · 130,000 shares

Expires 2032-02-03

F1 · derivative.exercise_date: The option will vest as to 25% of the shares on February 4, 2023. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
February 04, 2021 Filed Feb 8, 2021 23:55 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantStock Option (Right to Buy) · Derivative 100,000 $0.00 Strike: $26.34 $0.00
Disclosure

SEC source: 0000899243-21-005255 · doc4.xml · derivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires 2031-02-03

F1 · derivative.exercise_date: The option will vest as to 25% of the shares on February 4, 2022. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
January 29, 2020 Filed Jan 31, 2020 21:06 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantSTOCK OPTION (RIGHT TO BUY) · Derivative 350,000 $0.00 Strike: $3.30 $0.00
Disclosure

SEC source: 0000899243-20-002420 · doc4.xml · derivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 350,000

Underlying: Common Stock · 350,000 shares

Expires 2030-01-28

F1 · derivative.exercise_date: The option will vest as to 25% of the shares on January 29, 2021. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
January 26, 2020 Filed Jan 28, 2020 21:06 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionRESTRICTED STOCK UNITS · Derivative 25,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-20-002212 · doc4.xml · derivative · entry 2

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,000 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: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: The restricted stock units are fully vested and do not have an expiration date.

F2 · derivative.expiration_date: The restricted stock units are fully vested and do not have an expiration date.

Read SEC document
January 26, 2020 Filed Jan 28, 2020 21:06 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionCOMMON STOCK 25,000 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-002212 · doc4.xml · nonDerivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,054

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: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

Read SEC document
January 28, 2019 Filed Jan 29, 2019 23:55 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 SaleCOMMON STOCK 5,471 $5.75 $31,477.95
Disclosure

SEC source: 0000899243-19-002141 · doc4.xml · nonDerivative · entry 2

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,054

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $5.75 to $5.8435. The Reporting Person undertakes to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
January 26, 2019 Filed Jan 29, 2019 23:55 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionRESTRICTED STOCK UNITS · Derivative 15,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-19-002141 · doc4.xml · derivative · entry 4

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 15,000 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: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4 · derivative.exercise_date: These restricted stock units have vested and settled or will vest and settle as to 20% of the restricted stock units on January 26, 2018, 30% on January 26, 2019, and 50% on January 26, 2020.

F4 · derivative.expiration_date: These restricted stock units have vested and settled or will vest and settle as to 20% of the restricted stock units on January 26, 2018, 30% on January 26, 2019, and 50% on January 26, 2020.

Read SEC document
January 26, 2019 Filed Jan 29, 2019 23:55 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionCOMMON STOCK 15,000 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-19-002141 · doc4.xml · nonDerivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,525

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: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

Read SEC document
January 25, 2019 Filed Jan 29, 2019 23:55 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantSTOCK OPTION (RIGHT TO BUY) · Derivative 84,800 $0.00 Strike: $6.01 $0.00
Disclosure

SEC source: 0000899243-19-002141 · doc4.xml · derivative · entry 3

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,800

Underlying: Common Stock · 84,800 shares

Expires 2029-01-24

F3 · derivative.exercise_date: The option will vest as to 25% of the shares on January 25, 2020. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
January 30, 2018 Filed Jan 31, 2018 01:58 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantSTOCK OPTION (RIGHT TO BUY) · Derivative 100,000 $0.00 Strike: $10.42 $0.00
Disclosure

SEC source: 0000899243-18-002329 · doc4.xml · derivative · entry 5

DesRosier Thomas · CIK 0001435744 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: COMMON STOCK · 100,000 shares

Expires 2028-01-29

F4 · derivative.exercise_date: This Option will vest as to one third of the shares on January 30, 2019, one third on January 30, 2020 and one third on January 30, 2021.

Read SEC document
January 30, 2018 Filed Jan 31, 2018 01:58 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantSTOCK OPTION (RIGHT TO BUY) · Derivative 80,000 $0.00 Strike: $10.42 $0.00
Disclosure

SEC source: 0000899243-18-002329 · doc4.xml · derivative · entry 4

DesRosier Thomas · CIK 0001435744 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,000

Underlying: COMMON STOCK · 80,000 shares

Expires 2028-01-29

F3 · derivative.exercise_date: This Option will vest as to 25% of the shares on January 30, 2019. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

Read SEC document
January 26, 2018 Filed Jan 31, 2018 01:58 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionRESTRICTED STOCK UNITS · Derivative 10,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-18-002329 · doc4.xml · derivative · entry 3

DesRosier Thomas · CIK 0001435744 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,000

Underlying: COMMON STOCK · 10,000 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: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: These restricted stock units have vested and settled or will vest and settle as to 20% of the restricted stock units on January 26, 2018, 30% on January 26, 2019; and 50% on January 26, 2020.

F2 · derivative.expiration_date: These restricted stock units have vested and settled or will vest and settle as to 20% of the restricted stock units on January 26, 2018, 30% on January 26, 2019; and 50% on January 26, 2020.

Read SEC document
January 26, 2018 Filed Jan 31, 2018 01:58 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 SaleCOMMON STOCK 3,475 $11.02 $38,294.50
Disclosure

SEC source: 0000899243-18-002329 · doc4.xml · nonDerivative · entry 2

DesRosier Thomas · CIK 0001435744 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,525

Read SEC document
January 26, 2018 Filed Jan 31, 2018 01:58 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 Exercise / conversionCOMMON STOCK 10,000 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-18-002329 · doc4.xml · nonDerivative · entry 1

DesRosier Thomas · CIK 0001435744 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

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: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

Read SEC document
January 26, 2017 Filed Jan 27, 2017 22:57 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantRestricted Stock Units · Derivative 50,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-17-002129 · doc4.xml · derivative · entry 2

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3 · derivative.exercise_date: These restricted stock units vest as to 20% on January 26, 2018, 30% on January 26, 2019 and 50% on January 26, 2020.

F3 · derivative.expiration_date: These restricted stock units vest as to 20% on January 26, 2018, 30% on January 26, 2019 and 50% on January 26, 2020.

Read SEC document
January 26, 2017 Filed Jan 27, 2017 22:57 UTC Seres Therapeutics, Inc. MCRB · Entity 7191 GrantStock Option (right to buy) · Derivative 60,000 $0.00 Strike: $9.89 $0.00
Disclosure

SEC source: 0000899243-17-002129 · doc4.xml · derivative · entry 1

DesRosier Thomas · CIK 0001435744 · Chief Legal Officer and EVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2027-01-25

F1 · derivative.exercise_date: The option will vest as to 25% of the shares on January 26, 2018. The remainder of the shares will vest in 12 equal quarterly installments thereafter.

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.