Tapewire

Nasdaq · USD

ETON

Eton Pharmaceuticals, Inc.

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Tapewire entity
4598
SEC CIK
0001710340
Parsed reports
131

Last 12 months

Inside the activity.

0 purchase rows · 29 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202600
Feb 202600
Mar 202600
Apr 202600
May 202607
Jun 202601
Jul 202609
Aug 2026011
Sep 202600
Oct 202601

Latest available

Insider transactions

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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 dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
May 28, 2026 Filed May 29, 2026 20:16 UTC
BRYNJELSEN SEANDirector · President & CEO
SaleCommon Stock 119,852 $31.88 $3,820,881.76
Disclosure

SEC source: 0001437749-26-018879 · rdgdoc.xml · nonDerivative · entry 1

BRYNJELSEN SEAN · CIK 0001669976 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 833,842

F1 · price: The shares were sold in multiple trades at prices ranging from $31.59 to $32.55. The price above reflects the weighted average sales price.

F2 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 27, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionEmployee Stock Option · Derivative 7,203 $0.00 Strike: $3.58 $0.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · derivative · entry 15

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,406

Underlying: Common Stock · 7,203 shares

Expires 2030-03-11

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_date: The shares subject to the option vested in 48 equal monthly installments from the date of grant (3-12-2020) until fully vested.

Read SEC document
May 27, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionEmployee Stock Option · Derivative 12,476 $0.00 Strike: $1.37 $0.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · derivative · entry 14

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,476 shares

Expires 2027-11-09

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.

F6 · derivative.exercise_date: The shares subject to the option vested annually from the date of grant (11-10-2017) in four equal installments.

Read SEC document
May 27, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
SaleCommon Stock 19,679 $31.47 $619,374.88
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 10

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,249

F1 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F5 · price: The shares were sold in multiple trades at prices ranging from $31.25 to $31.825. The price reported above reflects the weighted average sales price.

Read SEC document
May 27, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionCommon Stock 7,203 $3.58 $25,786.74
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 9

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,928

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.

Read SEC document
May 27, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionCommon Stock 12,476 $1.37 $17,092.12
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 8

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,725

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.

Read SEC document
May 26, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionEmployee Stock Option · Derivative 12,524 $0.00 Strike: $1.37 $0.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · derivative · entry 13

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,476

Underlying: Common Stock · 12,524 shares

Expires 2027-11-09

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.

F6 · derivative.exercise_date: The shares subject to the option vested annually from the date of grant (11-10-2017) in four equal installments.

Read SEC document
May 26, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionEmployee Stock Option · Derivative 25,000 $0.00 Strike: $1.38 $0.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · derivative · entry 12

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,000 shares

Expires 2027-08-06

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.

F8 · derivative.exercise_date: The shares subject to option vested annually from the date of grant (8-7-2017) in four equal installments.

Read SEC document
May 26, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
SaleCommon Stock 37,524 $31.49 $1,181,732.07
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 7

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,249

F1 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F3 · price: The shares were sold in multiple trades at prices ranging from $31.27 to $32.16. The price reported above reflects the weighted average sales price.

Read SEC document
May 26, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionCommon Stock 12,524 $1.37 $17,157.88
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 6

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,773

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.

Read SEC document
May 26, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionCommon Stock 25,000 $1.38 $34,500.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 5

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,249

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.

Read SEC document
May 22, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionEmployee Stock Option · Derivative 30,591 $0.00 Strike: $3.58 $0.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · derivative · entry 11

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,609

Underlying: Common Stock · 30,591 shares

Expires 2030-03-11

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_date: The shares subject to the option vested in 48 equal monthly installments from the date of grant (3-12-2020) until fully vested.

Read SEC document
May 22, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
SaleCommon Stock 519 $35.00 $18,165.00
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 4

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,249

Read SEC document
May 22, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
SaleCommon Stock 9,315 $33.88 $315,594.06
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 3

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,768

F1 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F2 · price: The shares were sold in multiple trades at prices ranging from $33.68 to $34.66. The price reported above reflects the weighted average sales price.

Read SEC document
May 22, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
SaleCommon Stock 32,963 $33.22 $1,095,057.23
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 2

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,083

F1 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F7 · price: The shares were sold in multiple trades at prices ranging from $32.67 to $33.65. The price reported above reflects the weighted average sales price.

Read SEC document
May 22, 2026 Filed May 27, 2026 22:28 UTC
Krempa DavidChief Business Officer
Exercise / conversionCommon Stock 30,591 $3.58 $109,515.78
Disclosure

SEC source: 0001437749-26-018628 · rdgdoc.xml · nonDerivative · entry 1

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,046

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.

Read SEC document
April 21, 2026 Filed Apr 22, 2026 20:40 UTC Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 19,655 $0.00 Strike: $8.61 $0.00
Disclosure

SEC source: 0001437749-26-013041 · rdgdoc.xml · derivative · entry 5

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 19,655 shares

Expires 2031-05-02

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.

Read SEC document
April 21, 2026 Filed Apr 22, 2026 20:40 UTC Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 12,500 $0.00 Strike: $7.31 $0.00
Disclosure

SEC source: 0001437749-26-013041 · rdgdoc.xml · derivative · entry 4

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,500 shares

Expires 2029-02-19

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.

Read SEC document
April 21, 2026 Filed Apr 22, 2026 20:40 UTC Exercise / conversionCommon Stock 19,655 $8.61 $169,229.55
Disclosure

SEC source: 0001437749-26-013041 · rdgdoc.xml · nonDerivative · entry 2

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,155

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.

Read SEC document
April 21, 2026 Filed Apr 22, 2026 20:40 UTC Exercise / conversionCommon Stock 12,500 $7.31 $91,375.00
Disclosure

SEC source: 0001437749-26-013041 · rdgdoc.xml · nonDerivative · entry 1

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,500

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.

Read SEC document
February 03, 2026 Filed Feb 5, 2026 22:18 UTC OtherEmployee Stock Option (Right to Buy) · Derivative 30,000 $0.00 Strike: $4.42 $0.00
Disclosure

SEC source: 0001437749-26-003230 · rdgdoc.xml · derivative · entry 3

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 30,000 shares

Expires 2034-02-12

Read SEC document
February 03, 2026 Filed Feb 5, 2026 22:18 UTC OtherCommon Stock 30,000 $4.42 $132,600.00
Disclosure

SEC source: 0001437749-26-003230 · rdgdoc.xml · nonDerivative · entry 1

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,000

Read SEC document
January 14, 2026 Filed Jan 14, 2026 23:02 UTC
Gruber James R.Chief Financial Officer
Tax withholdingCommon Stock 2,293 $15.47 $35,472.71
Disclosure

SEC source: 0001437749-26-001286 · rdgdoc.xml · nonDerivative · entry 1

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,420

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The shares were sold in multiple trades at prices ranging from $15.46 to $15.48. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

Read SEC document
January 14, 2026 Filed Jan 14, 2026 23:03 UTC
Krempa DavidChief Business Officer
Tax withholdingCommon Stock 1,942 $15.62 $30,334.04
Disclosure

SEC source: 0001437749-26-001288 · rdgdoc.xml · nonDerivative · entry 1

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 630,238

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:07 UTC GrantRestricted Stock Units · Derivative 7,757 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001296 · rdgdoc.xml · derivative · entry 2

CASAMENTO CHARLES J · CIK 0001117167 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 302,928

Underlying: Common Stock · 7,757 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F3 · derivative.exercise_date: The restricted stock units vest in one annual installment beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F3 · derivative.expiration_date: The restricted stock units vest in one annual installment beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:07 UTC GrantEmployee Stock Option (Right to Buy) · Derivative 12,196 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001296 · rdgdoc.xml · derivative · entry 1

CASAMENTO CHARLES J · CIK 0001117167 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 295,171

Underlying: Common Stock · 12,196 shares

Expires 2036-01-11

F1 · derivative.exercise_date: The shares subject to the option shall vest on a quarterly basis over 12 months from the date of grant until fully vested and exercisable on January 12, 2027.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:09 UTC GrantRestricted Stock Units · Derivative 7,757 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001301 · rdgdoc.xml · derivative · entry 2

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 294,253

Underlying: Common Stock · 7,757 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F3 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F3 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:09 UTC GrantEmployee Stock Option (Right to Buy) · Derivative 12,196 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001301 · rdgdoc.xml · derivative · entry 1

RIEDEL NORBERT G · CIK 0001161662 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,496

Underlying: Common Stock · 12,196 shares

Expires 2036-01-11

F1 · derivative.exercise_date: The shares subject to the option shall vest on a quarterly basis over 12 months from the date of grant until fully vested and exercisable on January 12, 2027.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:05 UTC
Erdogan-Trinkaus IpekChief Commercial Officer
GrantRestricted Stock Units · Derivative 25,856 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001292 · rdgdoc.xml · derivative · entry 2

Erdogan-Trinkaus Ipek · CIK 0002047026 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 149,734

Underlying: Common Stock · 25,856 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F3 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F3 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:05 UTC
Erdogan-Trinkaus IpekChief Commercial Officer
GrantEmployee Stock Option (Right to Buy) · Derivative 40,655 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001292 · rdgdoc.xml · derivative · entry 1

Erdogan-Trinkaus Ipek · CIK 0002047026 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,878

Underlying: Common Stock · 40,655 shares

Expires 2036-01-11

F1 · derivative.exercise_date: The shares subject to the option shall vest in 48 equal monthly installments from the date of grant until fully vested and exercisable on January 12, 2030.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:08 UTC GrantRestricted Stock Units · Derivative 7,757 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001298 · rdgdoc.xml · derivative · entry 2

Adams Jennifer McKie · CIK 0001851440 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 178,086

Underlying: Common Stock · 7,757 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F3 · derivative.exercise_date: The restricted stock units vest in one annual installment beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F3 · derivative.expiration_date: The restricted stock units vest in one annual installment beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:08 UTC GrantEmployee Stock Option (Right to Buy) · Derivative 12,196 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001298 · rdgdoc.xml · derivative · entry 1

Adams Jennifer McKie · CIK 0001851440 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 170,329

Underlying: Common Stock · 12,196 shares

Expires 2036-01-11

F1 · derivative.exercise_date: 1. The shares subject to the option shall vest on a quarterly basis over 12 months from the date of grant until fully vested and exercisable on January 12, 2027.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:06 UTC
MAIER PAUL VDirector
GrantRestricted Stock Units · Derivative 7,757 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001294 · rdgdoc.xml · derivative · entry 2

MAIER PAUL V · CIK 0001182615 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 294,253

Underlying: Common Stock · 7,757 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F3 · derivative.exercise_date: The restricted stock units vest in one annual installment beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F3 · derivative.expiration_date: The restricted stock units vest in one annual installment beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:06 UTC
MAIER PAUL VDirector
GrantEmployee Stock Option (Right to Buy) · Derivative 12,196 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001294 · rdgdoc.xml · derivative · entry 1

MAIER PAUL V · CIK 0001182615 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,496

Underlying: Common Stock · 12,196 shares

Expires 2036-01-11

F1 · derivative.exercise_date: The shares subject to the option shall vest on a quarterly basis over 12 months from the date of grant until fully vested and exercisable on January 12, 2027.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:04 UTC
BRYNJELSEN SEANDirector · President & CEO · 10% owner
GrantRestricted Stock Units · Derivative 100,517 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001290 · rdgdoc.xml · derivative · entry 3

BRYNJELSEN SEAN · CIK 0001669976 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,147,829

Underlying: Common Stock · 100,517 shares

Expires not disclosed

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F6 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F6 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:04 UTC
BRYNJELSEN SEANDirector · President & CEO · 10% owner
GrantEmployee Stock Option (Right to Buy) · Derivative 158,046 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001290 · rdgdoc.xml · derivative · entry 2

BRYNJELSEN SEAN · CIK 0001669976 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,047,312

Underlying: Common Stock · 158,046 shares

Expires 2036-01-11

F4 · derivative.exercise_date: The shares subject to the option shall vest in 48 equal monthly installments from the date of grant until fully vested and exercisable on January 12, 2030.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:02 UTC
Gruber James R.Chief Financial Officer
GrantRestricted Stock Units · Derivative 25,856 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001286 · rdgdoc.xml · derivative · entry 3

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 279,931

Underlying: Common Stock · 25,856 shares

Expires not disclosed

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F6 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F6 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:02 UTC
Gruber James R.Chief Financial Officer
GrantEmployee Stock Option (Right to Buy) · Derivative 40,655 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001286 · rdgdoc.xml · derivative · entry 2

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 254,075

Underlying: Common Stock · 40,655 shares

Expires 2036-01-11

F4 · derivative.exercise_date: The shares subject to the option shall vest in 48 equal monthly installments from the date of grant until fully vested and exercisable on January 12, 2030.

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January 12, 2026 Filed Jan 14, 2026 23:03 UTC
Krempa DavidChief Business Officer
GrantRestricted Stock Units · Derivative 25,856 $0.00 $0.00
Disclosure

SEC source: 0001437749-26-001288 · rdgdoc.xml · derivative · entry 3

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 696,749

Underlying: Common Stock · 25,856 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F5 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

F5 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning January 12, 2027, contingent upon the reporting person being employed by the issuer on the date(s) of vesting.

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January 12, 2026 Filed Jan 14, 2026 23:03 UTC
Krempa DavidChief Business Officer
GrantEmployee Stock Option (Right to Buy) · Derivative 40,655 $0.00 Strike: $15.47 $0.00
Disclosure

SEC source: 0001437749-26-001288 · rdgdoc.xml · derivative · entry 2

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 670,893

Underlying: Common Stock · 40,655 shares

Expires 2036-01-11

F3 · derivative.exercise_date: The shares subject to the option shall vest in 48 equal monthly installments from the date of grant until fully vested and exercisable on January 12, 2030.

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January 01, 2026 Filed Jan 14, 2026 23:04 UTC
BRYNJELSEN SEANDirector · President & CEO · 10% owner
Tax withholdingCommon Stock 5,015 $15.39 $77,180.85
Disclosure

SEC source: 0001437749-26-001290 · rdgdoc.xml · nonDerivative · entry 1

BRYNJELSEN SEAN · CIK 0001669976 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,889,266

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The shares were sold in multiple trades at prices ranging from $15.39 to $15.42. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

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December 12, 2025 Filed Dec 12, 2025 21:57 UTC
Erdogan-Trinkaus IpekChief Commercial Officer
Tax withholdingCommon Stock 85 $16.90 $1,436.50
Disclosure

SEC source: 0001437749-25-037747 · rdgdoc.xml · nonDerivative · entry 1

Erdogan-Trinkaus Ipek · CIK 0002047026 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,403

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The shares were sold in multiple trades at prices ranging from $16.90 to $16.91. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

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December 12, 2025 Filed Dec 12, 2025 21:56 UTC
Krempa DavidChief Business Officer
Tax withholdingCommon Stock 6,264 $17.00 $106,488.00
Disclosure

SEC source: 0001437749-25-037745 · rdgdoc.xml · nonDerivative · entry 1

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 632,180

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The shares were sold in multiple trades at prices ranging from $16.83 to $17.11. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

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December 12, 2025 Filed Dec 12, 2025 21:55 UTC
Gruber James R.Chief Financial Officer
Tax withholdingCommon Stock 4,542 $16.99 $77,168.58
Disclosure

SEC source: 0001437749-25-037743 · rdgdoc.xml · nonDerivative · entry 1

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 215,713

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The shares were sold in multiple trades at prices ranging from $16.94 to $17.07. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

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December 12, 2025 Filed Dec 12, 2025 21:54 UTC
BRYNJELSEN SEANDirector · President & CEO · 10% owner
Tax withholdingCommon Stock 6,732 $16.83 $113,299.56
Disclosure

SEC source: 0001437749-25-037741 · rdgdoc.xml · nonDerivative · entry 1

BRYNJELSEN SEAN · CIK 0001669976 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,894,281

F1 · shares: Shares withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.

F2 · price: The shares were sold in multiple trades at prices ranging from $16.66 to $16.98. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

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December 11, 2025 Filed Dec 12, 2025 21:56 UTC
Krempa DavidChief Business Officer
GrantRestricted Stock Units · Derivative 5,300 $0.00 $0.00
Disclosure

SEC source: 0001437749-25-037745 · rdgdoc.xml · derivative · entry 2

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 638,468

Underlying: Common Stock · 5,300 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F5 · derivative.exercise_date: The restricted stock units vest immediately as of the award date.

F5 · derivative.expiration_date: The restricted stock units vest immediately as of the award date.

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December 11, 2025 Filed Dec 12, 2025 21:55 UTC
Gruber James R.Chief Financial Officer
GrantRestricted Stock Units · Derivative 5,502 $0.00 $0.00
Disclosure

SEC source: 0001437749-25-037743 · rdgdoc.xml · derivative · entry 2

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,255

Underlying: Common Stock · 5,502 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of ETON Common Stock.

F5 · derivative.exercise_date: The restricted stock units vest immediately as of the award date.

F5 · derivative.expiration_date: The restricted stock units vest immediately as of the award date.

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August 20, 2025 Filed Aug 20, 2025 21:14 UTC
Gruber James R.Chief Financial Officer
SaleCommon Stock 2,631 $16.02 $42,148.62
Disclosure

SEC source: 0001437749-25-027464 · rdgdoc.xml · nonDerivative · entry 2

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 204,753

F1 · price: The shares were sold in multiple trades at prices ranging from $16.01 to $16.43. The price reported above reflects the weighted average sales price.

F2 · price: The shares were sold in multiple trades at prices ranging from $15.90 to $16.19. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

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August 19, 2025 Filed Aug 20, 2025 21:14 UTC
Gruber James R.Chief Financial Officer
SaleCommon Stock 39,082 $16.16 $631,565.12
Disclosure

SEC source: 0001437749-25-027464 · rdgdoc.xml · nonDerivative · entry 1

Gruber James R. · CIK 0001923165 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 205,299

F1 · price: The shares were sold in multiple trades at prices ranging from $16.01 to $16.43. The price reported above reflects the weighted average sales price.

F2 · price: The shares were sold in multiple trades at prices ranging from $15.90 to $16.19. The price reported above reflects the weighted average sales price.

F3 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

Read SEC document
June 16, 2025 Filed Jun 16, 2025 20:56 UTC
Krempa DavidChief Business Officer
SaleCommon Stock 10,223 $14.73 $150,584.79
Disclosure

SEC source: 0001437749-25-020518 · rdgdoc.xml · nonDerivative · entry 3

Krempa David · CIK 0001968254 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 612,646

F3 · price: The shares were sold in multiple trades at prices ranging from $14.50 to $14.79. The price reported above reflects the weighted average sales price.

F4 · price: The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.