IBKR Interactive Brokers Group, Inc. Insider Trading

Interactive Brokers director Harris Lawrence E sells $2M in IBKR shares, reducing holdings by 13% amid recent strength.

Director Harris Lawrence E sold roughly 26,000 shares worth $2 million, trimming his position by approximately 13%, at a price very close to current levels on a day the stock was up sharply over the prior month. The company is profitable with stable revenue growth, though trading at an elevated valuation multiple that leaves less margin for error. The timing of this sale—coming after a strong monthly rally but still modestly below the 52-week high—suggests prudent portfolio rebalancing rather than an urgent exit signal. Without visibility into Harris's broader transaction history or any accompanying Form 5 amendments, the modest scale of the reduction (13% of holdings) limits how much this signals near-term directional concern. The stock's recent momentum and solid fundamentals argue against reading this as a red flag, though director stakes worth monitoring remain when large shareholders trim positions.

Director Lori A Conkling buys 25 IBKR shares at $68.38; holdings now 2,434 shares post $1.7K purchase.

Lori A Conkling, Director, purchased 25 shares of Interactive Brokers Group at $68.38 on 2026-04-01, bringing her post-transaction holdings to 2,434 shares. The purchase represents a modest 1.0% increase to her position, and the transaction value of $1,709.50 ($1.7K) is immaterial relative to the company's $2.9B market cap. Conkling's prior two buys at IBKR (on 2026-03-02 and 2026-02-25) have not yet generated positive measurable outcomes at the 90-day horizon, with the most recent showing a 30-day return of -1.9%. The current stock price of $67.74 is 13.6% below its 52-week high and 2.4% lower over 30 days, placing the transaction within a broader period of consolidation rather than at an obvious inflection point. The open-market purchase demonstrates continued accumulation by a board member, though the small size and lack of conviction-signaling pattern limits its tactical significance for investors.

Director Lori A Conkling purchased 75 shares of IBKR across 2 transactions for $5,390.75, raising holdings to 2,409 shares

Conkling executed 2 separate purchases totaling 75 shares for $5,390.75 at blended average price $71.88, bringing her post-transaction holdings to 2,409 shares (+3.2% vs pre-transaction). The purchases occurred on 2026-02-25 at $73.21 per share (50 shares) and on 2026-03-02 at $69.21 per share (25 shares), with the second purchase occurring as the stock declined roughly 5.5% in the interim. Current price is $66.20, placing both transactions above the current market level. IBKR's financial position remains strong with latest-quarter revenue of $1,655,000,000.00 and net income of $1,186,000,000.00, with annual revenue growth of +19.7%. The transaction represents modest accumulation in absolute terms, adding 75 shares to an existing 2,334-share position.

Vice Chairman Nemser sells entire 155,000 share position for $11.8M across 5 transactions Jan 26–27, 2026.

Nemser Earl H, Vice Chairman of Interactive Brokers Group (IBKR), executed 5 separate sales totaling 155,000 shares (155.0K shares) for $11,755,911.20 ($11.8M) on January 26–27, 2026, eliminating his entire holding. The transactions were priced at a blended average of $75.84, near the current price of $75.45 and within the 52-week range, with the most recent sales occurring around the 52-week high of $77.58. IBKR's fundamentals show robust near-term performance (30-day change: +15.5%; 90-day change: +10.1%; annual revenue growth +19.5%) and extremely low valuation (P/E: 0.77), suggesting a profitable and growing business. The timing of a complete liquidation by a senior executive merits scrutiny, particularly the concentrated execution over two consecutive trading days. Nemser's cross-ticker track record shows a 0.00% well-timed rate on 20 prior sells with a modest 90-day average return of +9.2%, while his two most recent IBKR-specific measurable outcomes (August 2025) posted +13.2% and +13.8% 90-day returns, indicating his prior IBKR sales preceded substantial gains. The complete exit and rapid execution pattern are material signals warranting investor attention.

Vice Chairman Nemser Earl H sold 245,000 shares for $18,969,681.85 in 3 transactions (Jan 22-23), reducing holdings by 61.2% to 155,000 shares.

Vice Chairman Nemser Earl H executed 3 separate sales totaling 245,000 shares for $18,969,681.85 at prices ranging from $76.81 to $78.14, reducing his position from 400,000 to 155,000 shares—a 61.2% reduction in holdings. The transactions occurred near the stock's 52-week high of $77.58, with the blended average sale price of $77.43 just 1.4% below the high and 2.8% above the current price of $75.35. His prior trades at IBKR showed 0 of 2 measurable sells well-timed at the 90-day mark, with subsequent 90-day returns of +13.2% and +13.8%, meaning shares sold in August 2025 appreciated afterward. The company's fundamentals remain robust, with $1.2B net income on $1.7B quarterly revenue and +19.5% annual revenue growth, though a P/E of 0.77 is unusually low and warrants verification of financial reporting integrity. The substantial proportion of his wealth exiting at cyclical highs, combined with a historical pattern of missed upside at this ticker, merits close attention to whether this sale reflects updated views on valuation or capital reallocation rather than scheduled plan activity.

Director Jill Bright bought 400 IBKR shares at $65.95 on 2025-10-23; cross-ticker track record shows avg 90d return -80.1% on prior buys.

Bright Jill purchased 400 shares of Interactive Brokers Group at $65.95, increasing her holdings to 10,304 shares. The transaction occurs in a stock trading near its 52-week high ($72.62), currently at $69.49 with strong recent momentum (+5.1% over 30 days, +6.6% over 90 days). However, the director's cross-ticker track record presents a material concern: across 2 prior open-market buys, the average 90-day return was -80.1%, with a 0.00% win rate. At this ticker specifically, her single prior buy on 2025-01-31 recorded a 90-day return of -80.1%. This purchase adds to holdings during a period of positive price action, but the historical pattern of poor post-purchase returns on the director's prior buys merits investor attention to whether this transaction reflects circumstances distinct from the established pattern.

Director Harris Lawrence E sold 30,000 shares of IBKR for $2,035,860, reducing holdings by 11.8% to 223,704 shares.

Harris Lawrence E executed 2 separate sales totaling 30,000 shares for $2,035,860 at an average price of $67.86 per share, reducing his holdings from 253,704 to 223,704 shares. The current price is $69.49, slightly above the blended transaction prices, reflecting modest price movement since the sales. IBKR trades at a P/E of 0.78 with strong fundamentals—revenue of $1,480,000,000 and net income of $1,006,000,000 in the latest quarter, representing 19.5% annual growth. The 11.8% reduction in Director Harris's stake occurs in a company with robust profitability and growth metrics. The transaction carries routine significance as a moderate portfolio reduction by a director, with no pattern data provided to contextualize whether this represents a systematic adjustment or discretionary decision.

CFO Paul Jonathan sold 21,361 shares of IBKR for $1.5M via scheduled 10b5-1 plan (Sep 29-30)

Paul Jonathan, Chief Financial Officer of Interactive Brokers, sold 21,361 shares across 5 separate transactions on September 29-30, 2025, generating $1,454,991.48 at a blended average price of $68.11. This sale reduced his holdings by 75.5%, from 28,289 shares to 6,928 shares post-transaction. The transaction was executed under a pre-arranged 10b5-1 trading plan, meaning it was scheduled and not discretionary in timing. Without additional context on the plan's initiation date or the CFO's overall compensation strategy, the sale reflects a substantial reduction in his company equity stake through a planned mechanism.

CFO Brody Paul Jonathan sells 31,354 shares of IBKR for $2.0M via scheduled 10b5-1 plan.

Brody Paul Jonathan, CFO of Interactive Brokers Group, executed 5 separate sales totaling 31,354 shares for $2,048,553.83 at prices ranging from $63.81 to $66.15 per share on September 25–26, 2025. This transaction was executed under a pre-arranged 10b5-1 trading plan, meaning it was scheduled and not discretionary. The sale reduced his holdings from 59,643 shares to 28,289 shares, a -52.6% reduction in his position. As a 10b5-1 transaction, the timing and sequencing reflect plan parameters rather than an insider's market judgment at the time of execution.

CFO Brody Paul Jonathan sells 33,416 shares of IBKR for $2,174,957.54 across 4 trades on Sept 23–24

Brody Paul Jonathan, Chief Financial Officer of Interactive Brokers Group, Inc., executed 4 separate sales totaling 33,416 shares for $2,174,957.54 at a blended average price of $65.09 on September 23–24, 2025. This represents a -35.9% reduction in his holdings, from 93,059 shares to 59,643 shares post-transaction. The current stock price of $64.97 is -3.9% from the 52-week high of $67.63, and the insider's transaction prices ($64.90, $65.49, $64.76, $65.54) bracket a narrow range near the current level. Interactive Brokers reported strong recent fundamentals with $1.5B in latest quarterly revenue, net income of $1.0B, and annual revenue growth of +19.5%, alongside a notably low P/E of 0.73. The lack of prior timing information at this ticker and the magnitude of the position reduction—more than one-third of his holdings—makes this a material disclosure warranting investor attention to potential portfolio-management or capital-allocation decisions at the executive level.