Reporting owner · CIK 0001274139

Hershberg Robert

Visual SEC Form 4 history across 2 companies, 6 transactions and 2 filings.

DIRAdaptive Biotechnologies Corp
Open-market mix
Latest filingAug 20, 2026, 09:55 PM
Filings2Form 4 records
Buying$00 purchases
Selling$796.9K4 sales
Net value−$796.9KBuys minus sells
Companies22 securities
Most recentAug 18, 2026exercise

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
530-3-52Feb 252Aug 26

Net value flow

Buys minus sells

Feb 25
−$48.7K
Aug 26
−$748.2K

Transaction texture

Ownership and ticket size

Average P/S size$199.2K
Median P/S size$196.8K
Direct6
Indirect0
Aug 18, 2026exercise

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern2Delayed Filingfiling-context1Derivative Transactionfiling-context1Direct Ownershipfiling-context6Large Holdings Reductionholdings1Repeat Sellerpattern1

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at Adaptive Biotechnologies Corp on Aug 18, 2026 valued at $382,358.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at Adaptive Biotechnologies Corp on Aug 18, 2026 valued at $382,358.

Review SEC filing

Associated companies

Visual map of known reporting history

ADPTAdaptive Biotechnologies Corp4 transactions · latest Aug 20, 2026, 09:55 PMHLVXHilleVax, Inc.2 transactions · latest Feb 12, 2025, 09:05 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
ADPTHERSHBERG ROBERT
DIR
exercise15.0k$0M
Derivative Transaction Direct Ownership
−4.3%08/2008/18
ADPTHERSHBERG ROBERT
DIR
sale15.6k-$38.2MS
Cluster Selling Direct Ownership Large Holdings Reduction+1
−4.3%08/2008/18
ADPTHERSHBERG ROBERT
DIR
sale15.0k-$36.5MS
Cluster Selling Direct Ownership
−4.3%08/2008/18
ADPTHERSHBERG ROBERT
DIR
exercise15.0k$9.48MM
Direct Ownership
−4.3%08/2008/18
HLVXHERSHBERG ROBERT
SR
sale11.9k-$2.10MS
Direct Ownership
—02/12/202502/11/2025
HLVXHERSHBERG ROBERT
SR
sale14.6k-$2.76MS
Delayed Filing Direct Ownership
—02/12/202502/04/2025

Hershberg Robert Insider Activity FAQ

SEC Form 4 context

Who is Hershberg Robert?

Hershberg Robert is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001274139.

Which companies has Hershberg Robert reported transactions for?

Adaptive Biotechnologies Corp, HilleVax, Inc.

When was Hershberg Robert's latest insider buy?

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

When was Hershberg Robert's latest insider sale?

sale at Adaptive Biotechnologies Corp on Aug 18, 2026 valued at $382,358.

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.