Reporting owner · CIK 0001298711

Krishnan Suma

SEC Form 4 history across 1 companies, 24 transactions and 2 filings.

PRES, R, DPresident, R&DKrystal Biotech, Inc.
Open-market transaction mix0% buys0 buys · 24 sales
Latest filingSep 04, 2026, 11:15 PM

Available history · Jun 04, 2026 – Sep 04, 2026

Filings2Form 4 records
Buying$00 purchases
Selling$16.7M24 sales
Net value−$16.7MBuys minus sells · disclosed values

Latest insider transactions

Form 4 filings from available history.
Krishnan Suma transactions · 20 per page
CompanyInsiderActivityDisclosed valueFiled (ET)
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$146kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$301kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$484kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$205kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$722kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$449kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$836kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$1.21MView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$1.13MView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$1.41MView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$1.16MView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$713kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$184kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$74.7kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$634kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$868kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$1.17MView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$3.91MView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$413kView disclosure →
KRYSKrystal Biotech, Inc.
Krishnan SumaPRES · R · DS · sale10b5-1 detectedSEC filing ↗-$146kView disclosure →
Open a transaction for shares, transaction date, ownership and the original SEC filing.

Latest Form 4 facts

Quick context from source filings

Latest open-market transaction

sale at Krystal Biotech, Inc. on Sep 04, 2026 valued at $146,256.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at Krystal Biotech, Inc. on Sep 04, 2026 valued at $146,256.

Review SEC filing

Monthly open-market activity

Last 2 reported months · purchases and sales

View exact monthly values
MonthPurchasesSalesBuy valueSale valueNet value
Jun 2026011$0.00$7,702,825.22-$7,702,825.22
Sep 2026013$0.00$8,982,985.52-$8,982,985.52

Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.

Ownership and transaction size

Ownership and ticket size

Average P/S size$695.2K
Median P/S size$466.8K
Direct24
Indirect0
Sep 04, 2026sale

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern11Direct Ownershipfiling-context11Large Salesize5Repeat Sellerpattern1010b5-1 Detectedfiling-context11

Associated companies

Companies in the disclosed reporting history

Krystal Biotech, Inc.KRYS · 40 transactions · latest Sep 04, 2026, 11:15 PM

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
No open-market purchases in available history

A 90-day purchase return requires an open-market buy. No eligible purchases are recorded in this history.

Disclosed ownership

How reported shareholdings evolved

Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.

24 observations · Jun 4, 2026 – Sep 4, 2026. Window ends at the latest available report, not today.

Selected observation · Sep 4, 20261,302,145 shares reported
Inspect transaction
View exact observations and source transactions
Transaction dateShares held afterFiledSource
Jun 4, 20261,402,835Jun 5, 2026View transaction
Jun 4, 20261,402,242Jun 5, 2026View transaction
Jun 4, 20261,401,995Jun 5, 2026View transaction
Jun 4, 20261,401,595Jun 5, 2026View transaction
Jun 4, 20261,401,115Jun 5, 2026View transaction
Jun 4, 20261,399,767Jun 5, 2026View transaction
Jun 4, 20261,387,038Jun 5, 2026View transaction
Jun 4, 20261,383,235Jun 5, 2026View transaction
Jun 4, 20261,380,434Jun 5, 2026View transaction
Jun 4, 20261,378,395Jun 5, 2026View transaction
Jun 4, 20261,378,155Jun 5, 2026View transaction
Sep 4, 20261,326,625Sep 4, 2026View transaction
Sep 4, 20261,324,619Sep 4, 2026View transaction
Sep 4, 20261,321,352Sep 4, 2026View transaction
Sep 4, 20261,317,390Sep 4, 2026View transaction
Sep 4, 20261,314,210Sep 4, 2026View transaction
Sep 4, 20261,310,818Sep 4, 2026View transaction
Sep 4, 20261,308,498Sep 4, 2026View transaction
Sep 4, 20261,307,256Sep 4, 2026View transaction
Sep 4, 20261,305,264Sep 4, 2026View transaction
Sep 4, 20261,304,699Sep 4, 2026View transaction
Sep 4, 20261,303,370Sep 4, 2026View transaction
Sep 4, 20261,302,544Sep 4, 2026View transaction
Sep 4, 20261,302,145Sep 4, 2026View transaction

Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.

Krishnan Suma Insider Activity FAQ

SEC Form 4 context

Who is Krishnan Suma?

Krishnan Suma is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001298711.

Which companies has Krishnan Suma reported transactions for?

Krystal Biotech, Inc.

When was Krishnan Suma's latest insider buy?

No open-market insider purchase is available for this period.

When was Krishnan Suma's latest insider sale?

sale at Krystal Biotech, Inc. on Sep 04, 2026 valued at $146,256.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.