Joel Reiss

Co-COO Joel Reiss sells 3,900 shares ($5.0M) at TransDigm; retains 3,600 post-transaction plus 15,800 stock options

Joel Reiss, Co-Chief Operating Officer, executed 18 separate sales totaling 3,900 shares for $4,979,456.59 at blended average price $1,276.78 on 2026-06-15. This represents a 52.0% reduction of his non-derivative holdings (from 7,500 to 3,600 shares), though he retains 15,800 shares through stock options. The transaction occurred with the stock trading 12.7% higher over 30 days and 12.8% higher over 90 days, within a 52-week range where current price ($1,328.31) sits 18.2% below its high. Across his prior open-market activity at TransDigm (5 recent prior sells on 2026-05-15), the insider's sales have consistently been followed by gains: 30-day returns ranged from +7.7% to +9.0%, though 90-day measurable outcomes are not yet available for those earlier trades. The high transaction volume (18 discrete sales at incrementally rising prices) and the scale of the reduction (half of non-derivative holdings in a single day) warrant monitoring against the company's strong fundamentals: $2.5B quarterly revenue, +11.2% annual growth, $535.0M net income, and $74.3B market cap.

Co-COO Reiss Joel sells 3,900 shares at TDG for $4,500,951.18 via 27 transactions under 10b5-1 plan

Reiss Joel, Co-Chief Operating Officer, executed 27 separate sales totaling 3,900 shares for $4,500,951.18 on 2026-05-15, reducing his holdings from 7,500 shares to 3,600 shares (a -52.0% reduction in his stake). This transaction is part of a pre-arranged 10b5-1 trading plan, meaning it is scheduled rather than discretionary. The blended average price across all transactions was $1,154.09. At the time of filing, the stock was trading at $1182.35, positioned -27.2% from its 52-week high of $1623.82. Historically, across his open-market activity, Reiss Joel's 20 prior sells showed an average 90-day return of -10.1%, and his prior 5 trades at TDG specifically showed 90-day returns ranging from -10.1% to -11.0%.

Co-Chief Operating Officer Reiss Joel sold 3,900 shares of TDG for $5.0M (blended avg $1,280.46) on 2026-04-15, reducing holdings by 52.0%

Reiss Joel, Co-Chief Operating Officer, executed 17 separate sales totaling 3,900 shares for $4,993,787.08 on 2026-04-15, selling at blended average price of $1,280.46 while the stock currently trades at $1,228.23 (down 24.2% from the 52-week high of $1,620.83). This represents a reduction in his holdings from 7,500 shares to 3,600 shares, a net decline of 52.0%. The cumulative proceeds and substantial reduction in holdings are material for a senior executive, particularly given that TransDigm trades at a P/E of 34.23 and the company posted annual revenue growth of 11.2% with recent quarterly net income of $445.0M. The stock has declined 15.3% over the prior 90 days; absent further disclosure around the timing or circumstances of this sale, investors should track whether this large executive liquidation coincides with material developments or is part of a structured plan.

Joel Reiss (Co-COO, TransDigm) sells 3,900 shares ($4.9M) in 19 transactions at $1,222.87–$1,250.25, reducing stake by 52%.

Joel Reiss executed 19 separate sales totaling 3,900 shares for $4,850,431.06 on 2026-03-16, representing a -52.0% reduction of his pre-transaction holdings of 7,500 shares. The blended average transaction price was $1,243.70, which sits above the current price of $1,232.51 (-24.0% from the 52-week high of $1,620.83) and -4.2% over the prior 30 days, placing the execution in a period of relative weakness. The concentrated large-scale liquidation is material and unusual for a Co-COO role, particularly given TransDigm's strong fundamentals: revenue of $2,285,000,000.00, net income of $445,000,000.00, annual revenue growth of +11.2%, and a market capitalization of $69,604,231,133.13. The five prior sales by the same insider on 2026-02-17 (outcomes not yet measurable) suggest a pattern of recent and sustained selling activity. Without scheduled transaction information (10b5-1 plan status not disclosed), the timing and magnitude warrant investor attention to determine whether this represents planned portfolio adjustment or reflects evolving insider perspective on valuation or company prospects.

Co-COO Reiss Joel sold 3.9K TDG shares for $5.0M on 2026-02-17; -52.0% of pre-transaction holdings remain

Reiss Joel executed 23 separate sales totaling 3,900 shares for $5,046,140.57 at blended average price of $1,293.88, reducing his holdings from 7,500 to 3,600 shares (a -52.0% reduction). The transaction occurred as TDG trades -18.8% from its 52-week high of $1,620.83, within a 52-week range of $1,231.75–$1,620.83, and reflects the stock's 30-day decline of -9.3%. His prior five trades at TDG (all on 2026-01-15, each generating negative 30-day returns ranging from -10.4% to -9.8%) establish a recent pattern of selling into weakness at this ticker. While his cross-ticker track record shows 20 prior sells with average 30-day return of -8.0%, the cumulative effect of this significant position reduction alongside depressed price action relative to recent highs warrants attention to whether the company's fundamentals (P/E of 36.66, annual revenue growth of +11.2%) remain supportive of current valuations.

Co-COO Reiss Joel sold 3.9K shares for $5.6M (blended avg $1,429.92) in 18 separate transactions on 2026-01-15, reducing holdings by 52.0%.

Reiss Joel executed a substantial reduction in his TDG position through 18 separate sales totaling 3,900 shares for $5,576,694.62, with a blended average price of $1,429.92. His post-transaction holdings fell to 3,600 shares from 7,500 shares, representing a -52.0% reduction in his stake. The multi-tranche structure and narrow pricing range ($1,420.38–$1,437.56 across transactions) indicate orderly liquidation rather than panic. His prior five sales at TDG (all on 2025-12-15) showed 30-day returns between +9.4% and +10.5%, consistent with his cross-ticker track record average of +10.2% over 20 prior sells, suggesting a historical pattern of selling into modest near-term strength rather than ahead of significant declines. With TDG trading at $1,450.00 (currently +14.9% in the past 30 days and a P/E of 35.63), this sale occurs in an elevated valuation environment, though without knowing the insider's total liquidity or portfolio strategy, the sale alone does not signal forward-looking concern about the business fundamentals.

Co-COO Reiss Joel sold 3,900 shares (52% of holdings) at avg $1,290.52 on 2025-12-15 for $5.0M

Reiss Joel executed 26 separate sales on 2025-12-15 totaling 3,900 shares for $5,033,033.33, reducing his holdings from 7,500 to 3,600 shares (a 52.0% reduction). The blended average price of $1,290.52 was established across a tight intraday distribution, with prices ranging from $1,282.73 to $1,309.34. The current stock price of $1,270.57 now trades 21.6% below the 52-week high of $1,620.83, and the 30-day change shows a 5.2% decline. His recent prior trading activity shows five additional sells completed on 2025-11-17, indicating a consistent pattern of liquidation over a compressed timeframe. This substantial reduction of executive equity stakes warrants monitoring, particularly given the company's strong fundamentals (revenue of $2,237,000,000.00, net income of $492,000,000.00, and annual revenue growth of 11.2%) and elevated valuation (P/E of 31.22).

Co-COO Reiss Joel sold 3,900 shares of TDG for $5,225,987.68 in 25 separate trades on 2025-11-17, reducing holdings by 52.0%.

Reiss Joel executed 25 separate sales totaling 3,900 shares for $5,225,987.68 on 2025-11-17, liquidating more than half his previous 7,500-share position to leave 3,600 shares remaining. The blended average price of $1,340.00 sits near the current price of $1,351.06, suggesting the sales occurred at fair current valuation. While his cross-ticker track record shows a 90d well-timed rate of 100.00% (with avg 90d return of -3.8%), his prior five sales at TDG on 2025-10-20 are not yet measurable at the 90-day mark, offering no historical context for assessing timing accuracy at this specific ticker. The magnitude of the liquidation—reducing his stake by 52.0%—represents a material reduction in equity exposure at a company where he serves as Co-Chief Operating Officer.

TDG Co-COO Joel Reiss sells 3,000 shares (45.5% reduction) for $3,838,757.37 in 9 separate transactions on 2025-10-20

Joel Reiss, Co-Chief Operating Officer of TransDigm Group, executed 9 separate sales totaling 3,000 shares for $3,838,757.37 at a blended average price of $1,279.59, reducing his holdings from 6,600 to 3,600 shares (a 45.5% reduction). The current stock price of $1,329.17 is -18.0% from the 52-week high of $1,620.83, suggesting the sales occurred in a market environment softer than peak valuations. Reiss's cross-ticker track record shows a 100.00% well-timed sell rate across 20 prior open-market sales (average 90-day return -20.6%), though his 5 most recent same-ticker TDG sales on 2025-09-22 lack measurable 90-day outcomes and cannot yet be evaluated. The scale and frequency of this multi-tranche liquidation on a single date, combined with the substantial reduction in ownership stake, warrants monitoring to understand whether this reflects broader capital allocation decisions or changes in circumstances at the company.

TransDigm Co-COO Reiss Joel sells 3,000 shares for $3.8M across 8 transactions on 2025-09-22; retains 3.6K shares after -45.5% reduction

Reiss Joel executed 8 separate sales totaling 3,000 shares (3.0K shares) for $3,828,204.42 ($3.8M) on 2025-09-22 at prices ranging from $1,270.15 to $1,279.15 with a blended average of $1,276.07, reducing his holdings from 6,600 shares (6.6K shares) to 3,600 shares (3.6K shares)—a net reduction of -45.5%. His prior 5 open-market sales at TransDigm (2025-08-20) showed 30-day declines ranging from -8.7% to -9.2%, and the stock has declined -6.5% over the past 30 days and -11.7% over 90 days from this sale date, now trading at $1,300.00 against a 52-week high of $1,620.83 (-19.8%). The transaction itself represents a substantial portion of his remaining equity stake in TransDigm, with the company trading at a P/E of 37.91 despite strong fundamentals: $2.2B quarterly revenue and +20.6% annual revenue growth.