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U.S. stock night market volatility: Large-scale selling by directors triggers a trust crisis, Coherent Corp. stock price drops 3.01% at night

Coherent Corp. fell 3.01% in after-hours trading; Amphenol fell 0.78% in after-hours trading, with a transaction volume of USD 47,800; Corning fell 1.11% in after-hours trading, with a transaction volume of USD 47,600; Littelfuse fell 8.69% in after-hours trading, with a transaction volume of USD 461

Tracking Unusual Activity·
US
COHR
+0.06%
Tracking Unusual Activity·
US
COHR
+0.06%

Guidewire CEO Michael George Rosenbaum Reports Sale of Common Shares

Guidewire Software Inc.'s CEO, Michael George Rosenbaum, has reported the sale of common shares of the company. This information was published via the EDGAR system by the U.S. Securities and Exchange Commission.

Reuters·
US
GWRE
-5.29%
Reuters·
US
GWRE
-5.29%

Guidewire Software CEO Sells 1,400 Shares

Reporter NameRosenbaum Michael GeorgeRelationshipChief Executive Officer, 10% OwnerTypeSellAmount$286,076SEC FilingForm 4Michael George Rosenbaum, CEO and 10% owner of Guidewire Software, sold 1,400 shares of common stock on December 15, 2025, at a price of $204.34 per share, totaling $286,076. The sale was executed under an automatic trading plan adopted on October 15, 2024. Following the transaction, Rosenbaum directly owns 246,758 shares of Guidewire Software.SEC Filing: Guidewire Software, Inc. [ GWRE ] - Form 4 - Dec. 15, 2025

TradingView·
US
GWRE
-5.29%
TradingView·
US
GWRE
-5.29%

Chmn Rothblatt Files To Sell 4,000 Of United Therapeutics Corp [UTHR]

Martine A. Rothblatt, Chairman of United Therapeutics Corp, filed a Form 144 with the SEC to sell 4,000 shares on December 15, 2025, through TD Securities under a prearranged trading plan (10b5-1). This filing allows the sale of restricted stock within 90 days.

Reuters·
US
UTHR
+1.28%
Reuters·
US
UTHR
+1.28%

16:18 ET Alger Russell Innovation Index Updates for Fourth Quarter 2025

Fred Alger Management, LLC announced the quarterly rebalancing of the Alger Russell Innovation Index, effective after trading closes on December 19, 2025. Additions include CCC Intelligent Solutions, Amdocs, Duolingo, F5 Inc., GoDaddy, Gentex Corp., and Zebra Technologies. Deletions include Corcept Therapeutics, Electronic Arts, Gilead Sciences, Johnson & Johnson, Qorvo, United Therapeutics, and Vertex Pharmaceuticals.

prnewswire·
US
CCCS
0.00%
US
GILD
+0.14%
US
UTHR
+1.28%
prnewswire·
US
CCCS
0.00%
US
GILD
+0.14%
US
UTHR
+1.28%
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