Tom Frohlich

Executive

Deputy Chief Executive

Chinook Therapeutics, Inc.Jade Biosciences, Inc.

Insider activity · 24 months1 buy0 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 1 buy · 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.)

€40k

▼ Sales (11 ops.)

€1.6M

Latest filing published 13 Feb 2026 for Jade Biosciences, Inc..

Filing timeline

BuySale

Tom Frohlich

Insider track record

Disclosed buys

Disclosed sells

T+90 hit rate

T+90 mean return

-2.8%

Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.

Signal history

Tom Frohlich: trading record in brief

Tom Frohlich, listed as senior executive, has filed trades across 2 companies (mainly through SEC (Form 4)), most often in Chinook Therapeutics, Inc. and Jade Biosciences, Inc. We count 25 filings; the first trade dates from 5 October 2020 and the latest from 12 February 2026.

Market trades split into 1 purchase (€40k) and 11 sales (€1.6M). Sales outweigh purchases by €1.5M. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. Besides market trades, the filings include 3 share grants and 9 option exercises.

The latest filing, published on 13 February 2026, reports a share grant in Jade Biosciences, Inc. The last purchase on record was published on 19 May 2025, which is 523 days ago. The median gap between a trade and its publication by SEC (Form 4) is 2 days. Section 16 rules allow two business days to file each Form 4. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.