Steven Nichtberger

Executive

Chairman & CEO

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 · 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 · 1 buy · 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 (3 ops.)

€239k

▼ Sales (0 ops.)

—

Latest filing published 21 Jan 2026 for Cabaletta Bio, Inc., €86k.

Filing timeline

BuySale

Steven Nichtberger

Insider track record

Disclosed buys

Disclosed sells

T+90 hit rate

100%

T+90 mean return

+7.8%

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

Signal history

Steven Nichtberger: trading record in brief

Steven Nichtberger (chief executive) discloses dealings in 2 companies, chiefly Cabaletta Bio, Inc. and Tengion Inc. The record holds 7 filings, for trades running from 14 April 2010 to 21 January 2026.

On the market, this insider has only ever bought: 3 purchases, €239k in total. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Outside the open market, there are 1 share grant and 1 option exercise. 2026 to date brings 1 purchase and no sales.

The median purchase comes to €86k. On 3 out of 3 purchases, another insider of the same company was buying within the same 30 days. Purchases made close together by different insiders form what is called a cluster.

The record was last updated on 21 January 2026 with an open-market purchase (€86k) in Cabaletta Bio, Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. For comparison, the SEC allows two business days to file a Form 4. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.