We have seen 178 open market insider transactions reported today, December 16, 2025. You can track them all on the Quiver Quantitative Insider Trading dashboard. Here are some of the largest open market insider stock purchases we have seen.
NEXTDECADE CORP ($NEXT)
Hanwha Aerospace Co., Ltd. bought 851,971 shares on 12/11 for an estimated $4,968,098.
Past $NEXT Insider Trades
NEXTDECADE CORP insiders have traded $NEXT stock on the open market 29 times in the past 6 months. Of those trades, 29 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $NEXT stock by insiders over the last 6 months:
- AEROSPACE CO., LTD. HANWHA has made 24 purchases buying 8,883,854 shares for an estimated $53,695,017 and 0 sales.
- WILLIAM C VRATTOS has made 2 purchases buying 600,000 shares for an estimated $4,342,600 and 0 sales.
- HILL INVESTMENT PARTNERS LP BARDIN purchased 357,021 shares for an estimated $2,492,899
- MATTHEW K SCHATZMAN (Chief Executive Officer) purchased 281,500 shares for an estimated $2,009,628
- EDWARD ANDREW JR. SCOGGINS purchased 15,000 shares for an estimated $96,835
VIVANI MEDICAL, INC. ($VANI)
Williams Gregg bought 1,473,214 shares on 12/15 for an estimated $1,649,999.
Past $VANI Insider Trades
VIVANI MEDICAL, INC. insiders have traded $VANI stock on the open market 9 times in the past 6 months. Of those trades, 9 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $VANI stock by insiders over the last 6 months:
- GREGG WILLIAMS has made 9 purchases buying 10,985,449 shares for an estimated $14,349,998 and 0 sales.
PRAIRIE OPERATING CO. ($PROP)
Narrogal Nominees Pty Ltd ATF Gregory K O'Neill Family Trust bought 800,000 shares on 12/15 for an estimated $1,348,240.
Past $PROP Insider Trades
PRAIRIE OPERATING CO. insiders have traded $PROP stock on the open market 25 times in the past 6 months. Of those trades, 25 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $PROP stock by insiders over the last 6 months:
- NOMINEES PTY LTD ATF GREGORY K O'NEILL FAMILY TRUST NARROGAL has made 16 purchases buying 2,953,665 shares for an estimated $5,040,376 and 0 sales.
- JONATHAN H. GRAY has made 3 purchases buying 428,480 shares for an estimated $905,742 and 0 sales.
- EDWARD KOVALIK (Chief Executive Officer) purchased 10,000 shares for an estimated $21,750
- RICHARD N. FROMMER has made 2 purchases buying 4,500 shares for an estimated $11,061 and 0 sales.
- GREGORY SCOTT PATTON (EVP and CFO) purchased 3,000 shares for an estimated $7,529
- STEPHEN LEE purchased 2,500 shares for an estimated $6,274
- ERIK THORESEN purchased 2,500 shares for an estimated $5,925
MEXICO FUND INC ($MXF)
Saba Capital Management, L.P. bought 28,475 shares on 12/15 for an estimated $575,764.
Past $MXF Insider Trades
MEXICO FUND INC insiders have traded $MXF stock on the open market 16 times in the past 6 months. Of those trades, 16 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $MXF stock by insiders over the last 6 months:
- CAPITAL MANAGEMENT, L.P. SABA has made 15 purchases buying 138,604 shares for an estimated $2,707,480 and 0 sales.
- CUELLAR MARIA REGINA GARCIA purchased 724 shares for an estimated $13,929
HARMONIC INC. ($HLIT)
KRALL DAVID bought 47,528 shares on 12/11 for an estimated $499,044.
Past $HLIT Insider Trades
HARMONIC INC. insiders have traded $HLIT stock on the open market 5 times in the past 6 months. Of those trades, 2 have been purchases and 3 have been sales.
Here’s a breakdown of recent trading of $HLIT stock by insiders over the last 6 months:
- DAVID KRALL purchased 47,528 shares for an estimated $499,044
- NEVEN HALTMAYER (SVP & GM, Video Business) has made 0 purchases and 3 sales selling 30,000 shares for an estimated $313,617.
- DANIEL T WHALEN purchased 2,000 shares for an estimated $16,500
To track insider transactions, check out Quiver Quantitative's insider trading dashboard.
