BCAX

SEC source: 0001470831-26-000883 · wk-form4_1789071782.xml · derivative · entry 4

Cohlhepp Ryan · CIK 0002034665 · Director · President, COO & Interim CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,252

Underlying: Common Stock · 17,500 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F4 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000883 · wk-form4_1789071782.xml · nonDerivative · entry 3

Cohlhepp Ryan · CIK 0002034665 · Director · President, COO & Interim CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 181,641

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $23.26 to $23.58, 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 at which the transactions were effected.

SEC source: 0001470831-26-000883 · wk-form4_1789071782.xml · nonDerivative · entry 2

Cohlhepp Ryan · CIK 0002034665 · Director · President, COO & Interim CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 185,083

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $22.26 to $23.25, 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 at which the transactions were effected.

SEC source: 0001470831-26-000883 · wk-form4_1789071782.xml · nonDerivative · entry 1

Cohlhepp Ryan · CIK 0002034665 · Director · President, COO & Interim CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 199,141

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000819 · wk-form4_1786740871.xml · derivative · entry 1

Larson Jennifer · CIK 0002149587 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 285,000

Underlying: Common Stock · 285,000 shares

Expires 2036-08-12

F1 · derivative.exercise_date: 25% of the shares subject to this option vest and become exercisable on August 12, 2027, with the remainder vesting in twelve equal quarterly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000812 · wk-form4_1786565947.xml · derivative · entry 3

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 51,752

Underlying: Common Stock · 18,750 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000812 · wk-form4_1786565947.xml · nonDerivative · entry 2

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 181,641

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $27.56 to $28.41, 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 at which the transactions were effected.

SEC source: 0001470831-26-000812 · wk-form4_1786565947.xml · nonDerivative · entry 1

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 200,391

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000814 · wk-form4_1786565959.xml · derivative · entry 3

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,336

Underlying: Common Stock · 12,500 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000814 · wk-form4_1786565959.xml · nonDerivative · entry 2

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 129,855

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $27.675 to $28.185, 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 at which the transactions were effected.

SEC source: 0001470831-26-000814 · wk-form4_1786565959.xml · nonDerivative · entry 1

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 142,355

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000813 · wk-form4_1786565953.xml · derivative · entry 3

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 110,546

Underlying: Common Stock · 10,000 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000813 · wk-form4_1786565953.xml · nonDerivative · entry 2

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,152

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $27.58 to $28.30, 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 at which the transactions were effected.

SEC source: 0001470831-26-000813 · wk-form4_1786565953.xml · nonDerivative · entry 1

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 372,152

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000738 · wk-form4_1785356312.xml · derivative · entry 1

Bender Jeremy · CIK 0001863107 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,950

Underlying: Common Stock · 38,950 shares

Expires 2036-07-28

F1 · derivative.exercise_date: One-third of the shares underlying this option shall vest and become exercisable on July 28, 2027, with the remainder vesting in twenty-four equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000737 · wk-form4_1785356301.xml · derivative · entry 1

Oliger Christy J. · CIK 0001822092 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,950

Underlying: Common Stock · 38,950 shares

Expires 2036-07-28

F1 · derivative.exercise_date: One-third of the shares underlying this option shall vest and become exercisable on July 28, 2027, with the remainder vesting in twenty-four equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000714 · wk-form4_1784060551.xml · derivative · entry 4

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 120,546

Underlying: Common Stock · 10,000 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000714 · wk-form4_1784060551.xml · nonDerivative · entry 3

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,152

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000714 · wk-form4_1784060551.xml · nonDerivative · entry 2

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,180

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.13 to $28.81, 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 at which the transactions were effected.

SEC source: 0001470831-26-000714 · wk-form4_1784060551.xml · nonDerivative · entry 1

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 372,152

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000701 · wk-form4_1783714248.xml · nonDerivative · entry 5

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 181,641

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000701 · wk-form4_1783714248.xml · derivative · entry 6

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,502

Underlying: Common Stock · 18,750 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F5 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000701 · wk-form4_1783714248.xml · nonDerivative · entry 4

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 182,177

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $30.25 to $30.50, 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 at which the transactions were effected.

SEC source: 0001470831-26-000701 · wk-form4_1783714248.xml · nonDerivative · entry 3

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 183,252

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.23 to $30.20, 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 at which the transactions were effected.

SEC source: 0001470831-26-000701 · wk-form4_1783714248.xml · nonDerivative · entry 2

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 187,558

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.21 to $29.15, 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 at which the transactions were effected.

SEC source: 0001470831-26-000701 · wk-form4_1783714248.xml · nonDerivative · entry 1

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 210,391

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001470831-26-000700 · wk-form4_1783714240.xml · derivative · entry 6

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,836

Underlying: Common Stock · 908 shares

Expires 2033-04-05

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F6 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following April 5, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000700 · wk-form4_1783714240.xml · derivative · entry 5

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,992

Underlying: Common Stock · 11,592 shares

Expires 2033-08-08

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F5 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following August 8, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001470831-26-000700 · wk-form4_1783714240.xml · nonDerivative · entry 4

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 129,855

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $30.25 to $30.50, 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 at which the transactions were effected.

SEC source: 0001470831-26-000700 · wk-form4_1783714240.xml · nonDerivative · entry 3

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 130,685

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.23 to $30.205, 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 at which the transactions were effected.

SEC source: 0001470831-26-000700 · wk-form4_1783714240.xml · nonDerivative · entry 2

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 135,098

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.22 to $29.10, 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 at which the transactions were effected.

SEC source: 0001470831-26-000700 · wk-form4_1783714240.xml · nonDerivative · entry 1

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 157,855

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2026.

SEC source: 0001628280-26-042251 · wk-form4_1781123650.xml · derivative · entry 1

Mazumdar-Shaw Kiran · CIK 0002034672 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: 1. The shares underlying this stock option vest upon the earlier of (i) June 9, 2027 or (ii) the date of the next Annual Meeting of Stockholders of Bicara Therapeutics Inc., subject to the Reporting Person's continued service on such vesting date.

SEC source: 0001628280-26-042255 · wk-form4_1781123718.xml · derivative · entry 1

Bowden Christopher · CIK 0001608601 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: The shares underlying this stock option vest upon the earlier of (i) June 9, 2027 or (ii) the date of the next Annual Meeting of Stockholders of Bicara Therapeutics Inc., subject to the Reporting Person's continued service on such vesting date.

SEC source: 0001231919-26-000618 · form4-06102026_080603.xml · derivative · entry 1

RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner

RA Capital Healthcare Fund LP · CIK 0001315082 · Director

RA Capital Nexus Fund III, L.P. · CIK 0001883840 · Director

Kolchinsky Peter · CIK 0001384859 · Director · 10% owner

Shah Rajeev M. · CIK 0001619841 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: Represents the grant of a stock option to Jake Simson pursuant to the Issuer's Non-Employee Director Compensation Policy. The shares underlying this option shall vest upon the earlier of (i) June 9, 2027, and (ii) the date of the next Annual Meeting of Stockholders of the Issuer, subject to Dr. Simson's continued service on such vesting date.

F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund") and RA Capital Nexus Fund III, L.P. (the "Nexus Fund III"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, the Nexus Fund III, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein.

F3 · ownership.nature: Under Dr. Simson's arrangement with the Adviser, Dr. Simson holds the option for the benefit of the Fund and the Nexus Fund III. Dr. Simson is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund and the Nexus Fund III to the Adviser. The Reporting Persons therefore disclaim beneficial ownership of the option and underlying common stock.

SEC source: 0001628280-26-042253 · wk-form4_1781123692.xml · derivative · entry 1

Haviland Kate · CIK 0001663022 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: The shares underlying this stock option vest upon the earlier of (i) June 9, 2027 or (ii) the date of the next Annual Meeting of Stockholders of Bicara Therapeutics Inc., subject to the Reporting Person's continued service on such vesting date.

SEC source: 0001628280-26-042249 · wk-form4_1781123614.xml · derivative · entry 1

Robertson Scott M. · CIK 0001882035 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: The shares underlying this stock option vest upon the earlier of (i) June 9, 2027 or (ii) the date of the next Annual Meeting of Stockholders of Bicara Therapeutics Inc., subject to the Reporting Person's continued service on such vesting date.

SEC source: 0001628280-26-042248 · wk-form4_1781123580.xml · derivative · entry 1

POWELL MICHAEL · CIK 0001202793 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: The shares underlying this stock option vest upon the earlier of (i) June 9, 2027 or (ii) the date of the next Annual Meeting of Stockholders of Bicara Therapeutics Inc., subject to the Reporting Person's continued service on such vesting date.

SEC source: 0001628280-26-042247 · wk-form4_1781123521.xml · derivative · entry 1

Simson Jake · CIK 0001863094 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,475

Underlying: Common Stock · 19,475 shares

Expires 2036-06-09

F1 · derivative.exercise_date: The shares underlying this stock option vest upon the earlier of (i) June 9, 2027 or (ii) the date of the next Annual Meeting of Stockholders of Bicara Therapeutics Inc., subject to the Reporting Person's continued service on such vesting date.

F2 · ownership.direct: Under the Reporting Person's arrangement with RA Capital Management, L.P. (the "Adviser"), the Reporting Person holds the option for the benefit of the R.A. Capital Healthcare Fund, L.P. (the "Fund") and R.A. Capital Nexus Fund III, L.P. (the "Nexus Fund III"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund and the Nexus Fund III to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the option and underlying common stock.

SEC source: 0001628280-26-038248 · wk-form4_1779832090.xml · derivative · entry 3

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,584

Underlying: Common Stock · 9,200 shares

Expires 2033-08-08

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025.

F3 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following August 8, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001628280-26-038248 · wk-form4_1779832090.xml · nonDerivative · entry 2

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 145,355

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $20.25 to $20.61, 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 at which the transactions were effected.

SEC source: 0001628280-26-038248 · wk-form4_1779832090.xml · nonDerivative · entry 1

Hyep Ivan · CIK 0002034668 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 154,555

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2025.

SEC source: 0001628280-26-036885 · wk-form4_1779307664.xml · derivative · entry 4

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 146,107

Underlying: Common Stock · 15,000 shares

Expires 2033-08-08

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

F4 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following August 8, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001628280-26-036885 · wk-form4_1779307664.xml · nonDerivative · entry 3

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,152

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $20.25 to $20.63, 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 at which the transactions were effected.

SEC source: 0001628280-26-036885 · wk-form4_1779307664.xml · nonDerivative · entry 2

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 365,130

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $19.52 to $20.22, 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 at which the transactions were effected.

SEC source: 0001628280-26-036885 · wk-form4_1779307664.xml · nonDerivative · entry 1

Mazumdar Claire · CIK 0002034671 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 377,152

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

SEC source: 0001628280-26-035937 · wk-form4_1779135854.xml · derivative · entry 4

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 101,334

Underlying: Common Stock · 8,000 shares

Expires 2033-08-08

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

F3 · derivative.exercise_date: The shares underlying this option vest in sixteen equal quarterly installments following August 8, 2023, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001628280-26-035937 · wk-form4_1779135854.xml · nonDerivative · entry 3

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 191,641

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $20.08 to $20.62, 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 at which the transactions were effected.

SEC source: 0001628280-26-035937 · wk-form4_1779135854.xml · nonDerivative · entry 2

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 196,141

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $20.08 to $20.62, 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 at which the transactions were effected.

SEC source: 0001628280-26-035937 · wk-form4_1779135854.xml · nonDerivative · entry 1

Cohlhepp Ryan · CIK 0002034665 · Director · President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 204,141

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: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on February 12, 2025.