Nikolaos Karellis, a director at $SBLK, sold 20,000 shares of the company on 06-11-2026 for an estimated $539,200. We received data on the trade from a recent SEC filing. This was a sale of approximately 100.0% of their shares of this class of stock. Following this trade, they now own 0 shares of this class of $SBLK stock.
$SBLK Insider Trading Activity
$SBLK insiders have traded $SBLK stock on the open market 10 times in the past 6 months. Of those trades, 0 have been purchases and 10 have been sales.
Here’s a breakdown of recent trading of $SBLK stock by insiders over the last 6 months:
- RAFFAELE ZAGARI sold 11,500 shares for an estimated $2,616,687,000
- NIKOLAOS RESKOS (Chief Operating Officer) has made 0 purchases and 7 sales selling 88,103 shares for an estimated $2,346,945.
- NIKOLAOS KARELLIS sold 20,000 shares for an estimated $539,200
- CHARIS PLAKANTONAKI (Chief Strategy Officer) sold 16,500 shares for an estimated $405,180
To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.
$SBLK Hedge Fund Activity
We have seen 101 institutional investors add shares of $SBLK stock to their portfolio, and 100 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- ALLIANCEBERNSTEIN L.P. removed 5,832,805 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $133,979,530
- MIRABELLA FINANCIAL SERVICES LLP removed 3,978,884 shares (-100.0%) from their portfolio in Q4 2025, for an estimated $76,474,150
- TWO SIGMA INVESTMENTS, LP added 2,450,563 shares (+435.7%) to their portfolio in Q1 2026, for an estimated $56,289,432
- AMERIPRISE FINANCIAL INC removed 2,106,777 shares (-98.1%) from their portfolio in Q1 2026, for an estimated $48,392,667
- MARSHALL WACE, LLP added 1,121,032 shares (+1168.9%) to their portfolio in Q1 2026, for an estimated $25,750,105
- GOLDMAN SACHS GROUP INC added 1,102,539 shares (+173.5%) to their portfolio in Q1 2026, for an estimated $25,325,320
- QUBE RESEARCH & TECHNOLOGIES LTD added 1,086,842 shares (+inf%) to their portfolio in Q1 2026, for an estimated $24,964,760
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
