Luke Nathaniel Walker

Harpoon Therapeutics, Inc.Zentalis Pharmaceuticals, Inc.

Insider activity · 24 months1 buy0 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 1 buy · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Companies

▲ Purchases (1 ops.)

€24k

▼ Sales (0 ops.)

—

Latest filing published 18 Jun 2025 for Zentalis Pharmaceuticals, Inc..

Filing timeline

BuySale

Luke Nathaniel Walker

Insider track record

Disclosed buys

Disclosed sells

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

Luke Nathaniel Walker: trading record in brief

This profile gathers the share dealings of Luke Nathaniel Walker across 3 companies, led by Cascadian Therapeutics, Inc., Harpoon Therapeutics, Inc. and Zentalis Pharmaceuticals, Inc. Over a trading history stretching from 11 January 2018 to 17 June 2025, the count stands at 9 filings.

Every open-market trade on record is a purchase: 1 purchase worth €24k, and no sale. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. The rest of the record consists of 5 share grants and 1 option exercise. So far in 2025, the count stands at 1 purchase and no sales.

The newest entry dates from 18 June 2025: a share grant, in Zentalis Pharmaceuticals, Inc. The last purchase on record was published on 4 February 2025, which is 627 days ago. Filings reach the SEC (Form 4) feed a median of 4 days after the trade. For comparison, the SEC allows two business days to file a Form 4. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.