Reporting owner · CIK 0001612451

Blackford Quentin S.

Visual SEC Form 4 history across 2 companies, 5 transactions and 3 filings.

DIRALIGN TECHNOLOGY INC
Open-market mix
Latest filingAug 31, 2026, 08:49 PM
Filings3Form 4 records
Buying$00 purchases
Selling$3.4M2 sales
Net value−$3.4MBuys minus sells
Companies22 securities
Most recentAug 27, 2026grant

Open-market buy performance

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

90d forward
Forward return is not available yet

We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.

Monthly open-market activity

Reported purchase and sale transaction counts

Buys Sells
530-3-51Feb 251Mar 25Aug 26

Net value flow

Buys minus sells

Feb 25
−$2.5M
Mar 25
−$885.9K
Aug 26
$0

Transaction texture

Ownership and ticket size

Average P/S size$1.7M
Median P/S size$1.7M
Direct5
Indirect0
Aug 27, 2026grant

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern2Derivative Transactionfiling-context1Direct Ownershipfiling-context5Large Holdings Increaseholdings1Large Salesize1Repeat Sellerpattern1

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at iRhythm Technologies, Inc. on Mar 03, 2025 valued at $885,932.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at iRhythm Technologies, Inc. on Mar 03, 2025 valued at $885,932.

Review SEC filing

Associated companies

Visual map of known reporting history

ALGNALIGN TECHNOLOGY INC1 transactions · latest Aug 31, 2026, 08:49 PMIRTCiRhythm Technologies, Inc.4 transactions · latest Mar 04, 2025, 09:05 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
ALGNBlackford Quentin S.
DIR
grant1.37k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
−0.7%08/3108/27
IRTCBlackford Quentin S.
PRES
sale8.14k-$88.5MS
Cluster Selling Direct Ownership Repeat Seller
—03/04/202503/03/2025
IRTCBlackford Quentin S.
PRES
sale22.2k-$249MS
Cluster Selling Direct Ownership Large Sale
—02/27/202502/26/2025
IRTCBlackford Quentin S.
PRES
grant38.5k$0A
Direct Ownership
—02/27/202502/26/2025
IRTCBlackford Quentin S.
PRES
grant40.6k$0A
Direct Ownership
—02/27/202502/25/2025

Blackford Quentin S. Insider Activity FAQ

SEC Form 4 context

Who is Blackford Quentin S.?

Blackford Quentin S. is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001612451.

Which companies has Blackford Quentin S. reported transactions for?

ALIGN TECHNOLOGY INC, iRhythm Technologies, Inc.

When was Blackford Quentin S.'s latest insider buy?

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

When was Blackford Quentin S.'s latest insider sale?

sale at iRhythm Technologies, Inc. on Mar 03, 2025 valued at $885,932.

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?

This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.