GRAMMER ELIZABETH A

SEC source: 0001104659-26-074047 · tm2617570-3_4seq1.xml · derivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,567

Underlying: Series A Common Stock · 39,567 shares

Expires 2036-06-11

F1 · derivative.exercise_date: The shares underlying this option shall vest and become exercisable over twelve (12) equal monthly installments following June 12, 2026, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001610717-25-000397 · form4.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 299,895

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001628280-25-041131 · wk-form4_1756170178.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 305,890

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001104659-25-058220 · tm2517621-1_4seq1.xml · derivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,250

Underlying: Series A Common Stock · 32,250 shares

Expires 2035-06-08

F1 · derivative.exercise_date: The shares underlying this option shall vest and become exercisable over twelve (12) equal monthly installments following June 9, 2025, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001628280-25-027425 · wk-form4_1747965021.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 311,731

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001628280-25-008792 · wk-form4_1740696991.xml · derivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 205,019

Underlying: Common Stock · 205,019 shares

Expires 2035-02-25

F2 · derivative.exercise_date: The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of February 25, 2025, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

SEC source: 0001628280-25-008792 · wk-form4_1740696991.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 317,723

F1 · shares: Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof.

SEC source: 0001628280-25-007228 · wk-form4_1740181995.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,043

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

F2 · price: Transaction was executed in multiple trades in prices ranging from $5.601611 to $5.625428, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001628280-24-049049 · wk-form4_1732317858.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 185,334

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001628280-24-038287 · wk-form4_1724365356.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 192,380

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001104659-24-069626 · tm2416701-1_4seq1.xml · derivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,459

Underlying: Series A Common Stock · 51,459 shares

Expires 2034-06-04

F1 · derivative.exercise_date: The shares underlying this option shall vest and become exercisable over twelve (12) equal monthly installments following June 5, 2024, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001628280-24-024935 · wk-form4_1716495028.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,469

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

F2 · balance_after: Reflects the adjusted total which includes the purchase of 2,636 shares under the Ardelyx Employee Stock Purchase Plan in February 2024.

SEC source: 0001610717-24-000235 · form4.xml · derivative · entry 6

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 241,313

Underlying: Common Stock · 109,687 shares

Expires 2033-01-05

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.

F3 · derivative.exercise_date: The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 5, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

SEC source: 0001610717-24-000235 · form4.xml · derivative · entry 5

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,750

Underlying: Common Stock · 110,250 shares

Expires 2032-01-06

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.

F2 · derivative.exercise_date: The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 6, 2022, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

SEC source: 0001610717-24-000235 · form4.xml · nonDerivative · entry 4

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,760

F1 · price: This transaction was executed in multiple trades in prices ranging from $8.63 to $9.04, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001610717-24-000235 · form4.xml · nonDerivative · entry 3

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 423,697

F1 · price: This transaction was executed in multiple trades in prices ranging from $8.63 to $9.04, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001610717-24-000235 · form4.xml · nonDerivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 487,930

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.

SEC source: 0001610717-24-000235 · form4.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 378,243

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.

SEC source: 0001610717-24-000233 · form4.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 267,993

F1 · kind: Transaction made pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 20, 2023.

SEC source: 0001610717-24-000182 · form4.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 312,993

F1 · kind: Transaction made pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 20, 2023.

F2 · price: This transaction was executed in multiple trades in prices ranging from $7.65 to $7.92, inclusive. The price reported in Column 4 above reflects the weighted average sales price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001610717-24-000083 · form4.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 398,993

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001628280-24-001680 · wk-form4_1705613639.xml · derivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,000

Underlying: Common Stock · 164,000 shares

Expires 2034-01-16

F2 · derivative.exercise_date: The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 16, 2024, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

SEC source: 0001628280-24-001680 · wk-form4_1705613639.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 403,425

F1 · shares: Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof.

SEC source: 0001628280-23-041479 · wk-form4_1702507443.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 275,675

F1 · kind: Transaction made pursuant to a 10b5-1 trading plan adopted by the Reporting Person on March 24, 2023.

F2 · price: This transaction was executed in multiple trades in prices ranging from $4.99 to $5.27, inclusive. The price reported in Column 4 above reflects the weighted average sales price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001628280-23-039900 · wk-form4_1700691550.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 325,675

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001628280-23-030399 · wk-form4_1692823171.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 328,059

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

F2 · price: This transaction was executed in multiple trades in prices ranging from $3.511 to $3.551843, inclusive. The price reported in Column 4 above reflects the weighted average sales price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001104659-23-082720 · tm2321276-13_4seq1.xml · derivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,533

Underlying: Series A Common Stock · 49,533 shares

Expires 2031-04-19

F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7 and Rule 16b-3, each share of Common Stock was reclassified into one share of Series A Common Stock.

F2 · derivative.exercise_date: The shares underlying this option vest in forty-eight (48) equal monthly installments following April 16, 2021, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001104659-23-082720 · tm2321276-13_4seq1.xml · derivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 49,533 shares

Expires 2031-04-19

F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7 and Rule 16b-3, each share of Common Stock was reclassified into one share of Series A Common Stock.

F2 · derivative.exercise_date: The shares underlying this option vest in forty-eight (48) equal monthly installments following April 16, 2021, subject to the Reporting Person's continued service on each such vesting date.

SEC source: 0001104659-23-064393 · tm2316962-6_4seq1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 330,451

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

F2 · balance_after: Reflects the adjusted total which includes the purchase of 2,881 shares under the Ardelyx Employee Stock Purchase Plan in February 2023.

SEC source: 0001567619-23-003772 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 329,954

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-23-000647 · doc1.xml · derivative · entry 3

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 351,000

Underlying: Common Stock · 351,000 shares

Expires 2033-01-05

F2 · derivative.exercise_date: The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 5, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

SEC source: 0001567619-23-000647 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 332,868

F1 · shares: Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof.

SEC source: 0001567619-22-020849 · doc1.xml · nonDerivative · entry 3

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 254,868

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-020849 · doc1.xml · nonDerivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 256,061

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-020849 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 256,081

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-016955 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 256,110

F1 · balance_after: Reflects the adjusted total which includes the purchase of 3,000 shares under the Ardelyx Employee Stock Purchase Plan on August 31, 2022.

SEC source: 0001567619-22-016643 · doc1.xml · nonDerivative · entry 3

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 253,110

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-016643 · doc1.xml · nonDerivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 253,119

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-016643 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 253,121

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-012554 · doc1.xml · nonDerivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 254,346

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-012554 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 255,606

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-011517 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 315,167

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-005661 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 316,430

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-22-001137 · doc1.xml · derivative · entry 3

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 196,000

Underlying: Common Stock · 196,000 shares

Expires 2032-01-06

F2 · derivative.exercise_date: The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 6, 2022, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

SEC source: 0001567619-22-001137 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 317,958

F1 · shares: Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof.

SEC source: 0001567619-21-021158 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 275,958

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-21-020115 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 276,495

F1 · kind: Transaction made pursuant to a 10b5-1 trading plan adopted by the Reporting Person on September 28, 2021.

F2 · price: The transaction was executed in multiple trades in prices ranging from $1.11 to $1.15, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The reporting person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0001567619-21-019028 · doc1.xml · nonDerivative · entry 1

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 353,927

F1 · shares: Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof.

F2 · balance_after: Reflects the adjusted total which includes the purchase of 1,541 shares under the Ardelyx Employee Stock Purchase Plan on February 28, 2021.

SEC source: 0001567619-21-016282 · doc1.xml · nonDerivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,386

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.

SEC source: 0001567619-21-010920 · doc1.xml · nonDerivative · entry 2

GRAMMER ELIZABETH A · CIK 0001213041 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,912

F1 · kind: Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes.