Dino A. Rossi - 14 Aug 2026 Form 4 Insider Report for Krystal Biotech, Inc. (KRYS)

Reporting relationship: Director
Issuer ticker: KRYS
Reported as of: 14 Aug 2026
Net transaction value: -$8,227,953
SEC form: 4
Accepted by SEC: 14 Aug 2026, 18:22:39 UTC
Prior SEC filing: 23 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Krish Krishnan, as attorney-in-fact for Dino A. Rossi

Key filing fact

Dino A. Rossi filed Form 4 for Krystal Biotech, Inc. (KRYS) on 14 Aug 2026.

Key facts

This page summarizes Dino A. Rossi's Form 4 filing for Krystal Biotech, Inc. (KRYS).
9 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 14 Aug 2026, 18:22.

Change

Previous filing in this sequence was filed on 23 Feb 2026.
Current net transaction value: -$8,227,953.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001209059 Primary reporting owner

ROSSI DINO A

Relationship: Director
Address: C/O KRYSTAL BIOTECH, INC., 2100 WHARTON STREET, SUITE 701, PITTSBURGH
Signature: /s/ Krish Krishnan, as attorney-in-fact for Dino A. Rossi
Signature date: 14 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KRYS transaction

Common Stock

Gift

Transaction value
Shares: -3,691
Change %: -4.7%
Price: $0.000000^*
Shares after: 75,000
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F1

KRYS transaction

Common Stock

Sale

Transaction value: $111,029
Shares: -341
Change %: -0.45%
Price: $325.60
Shares after: 74,659
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F2

KRYS transaction

Common Stock

Sale

Transaction value: $746,941
Shares: -2,287
Change %: -3.1%
Price: $326.60
Shares after: 72,372
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F3

KRYS transaction

Common Stock

Sale

Transaction value: $1,710,961
Shares: -5,226
Change %: -7.2%
Price: $327.39
Shares after: 67,146
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F4

KRYS transaction

Common Stock

Sale

Transaction value: $554,205
Shares: -1,687
Change %: -2.5%
Price: $328.52
Shares after: 65,459
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F5

KRYS transaction

Common Stock

Sale

Transaction value: $2,448,280
Shares: -7,428
Change %: -11%
Price: $329.60
Shares after: 58,031
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F6

KRYS transaction

Common Stock

Sale

Transaction value: $1,617,422
Shares: -4,896
Change %: -8.4%
Price: $330.36
Shares after: 53,135
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F7

KRYS transaction

Common Stock

Sale

Transaction value: $1,025,786
Shares: -3,095
Change %: -5.8%
Price: $331.43
Shares after: 50,040
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F8

KRYS transaction

Common Stock

Sale

Transaction value: $13,329
Shares: -40
Change %: -0.08%
Price: $333.23
Shares after: 50,000
Date: 14 Aug 2026
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

Represents a bona fide gift of Krystal Biotech, Inc.'s Common Stock to a charitable donor-advised fund.

Footnote F2

The transaction was executed in multiple trades ranging from $325 to $325.96. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.

Footnote F3

The transaction was executed in multiple trades ranging from $326.04 to $326.98. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.

Footnote F4

The transaction was executed in multiple trades ranging from $327 to $327.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.

Footnote F5

The transaction was executed in multiple trades ranging from $328.01 to $328.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.

Footnote F6

The transaction was executed in multiple trades ranging from $329.01 to $329.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.

Footnote F7

The transaction was executed in multiple trades ranging from $330 to $330.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.

Footnote F8

The transaction was executed in multiple trades ranging from $331.02 to $331.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth herein.