KVYO Klaviyo, Inc. Insider Trading

Co-CEO Andrew Bialecki sold 212,529 shares of KVYO at $14.61 via scheduled 10b5-1 plan; stock down 26.1% in 30 days.

Andrew Bialecki, Co-Chief Executive Officer, sold 212,529 shares at $14.61 on 2026-05-26 under a pre-arranged 10b5-1 trading plan adopted on 2025-05-20, meaning this was a scheduled transaction rather than discretionary timing. The sale occurred as the stock trades at $14.74 current price, down 59.9% from its 52-week high and off 26.1% over the prior 30 days. His prior five trades at KVYO have averaged negative 30-day and 90-day returns, ranging from -1.7% to -17.5% in the 30-day window. Klaviyo reported latest-quarter revenue of $358,005,000.00 with annual revenue growth of 31.6%, but the company was unprofitable over its most recent full fiscal year, creating a divergence between growth trajectory and current profitability that warrants attention to the fundamentals underlying the stock's recent weakness.

Co-CEO Bialecki sells entire 200.0K share stake in KVYO for $2,976,000.00 via 10b5-1 plan; stock down -24.7% in 30 days.

Bialecki Andrew, Co-Chief Executive Officer, executed a complete liquidation of his 200,000 share position at $14.88 per share on 2026-05-19, reducing holdings from 200.0K shares to 0 shares. This transaction is scheduled under a 10b5-1 trading plan adopted on 2025-05-20 and is not discretionary. The stock has declined -24.7% over the 30 days following the sale and stands at $15.11, down -58.9% from the 52-week high of $36.76. His prior five sales at KVYO show mixed post-transaction performance, with 30-day returns ranging from -18.1% to +3.4%, while his cross-ticker track record across 20 prior sells shows an average 90-day return of -23.7%. The company posted $358.0M in revenue (latest quarter) with +31.6% annual revenue growth, though it remains unprofitable on a full-year basis with negative net income.

Klaviyo Co-CEO Bialecki sells 200.0K shares in 2 transactions for $2.9M, reducing holdings to 0 under 10b5-1 plan

Co-Chief Executive Officer Andrew Bialecki executed 2 separate sales totaling 200,000 shares for $2,921,928.84 under a 10b5-1 trading plan adopted on 2025-05-20, leaving him with 0 shares post-transaction — a -100.0% reduction from his pre-transaction holdings of 200,000 shares. Because this is a scheduled transaction, the execution timing relative to price action is not a property of this trade. The stock currently sits at $14.34, down -62.0% from its 52-week high and -15.4% over 30 days and -22.9% over 90 days, context that reflects market conditions at the time of plan execution but not discretionary judgment. On the fundamentals side, Klaviyo reported latest-quarter revenue of $358.0M and net income of $9.0M, though the company was unprofitable over its most recent full fiscal year.

Co-CEO Bialecki sells 200,000 shares at avg $17.19 ($3.4M) via pre-arranged 10b5-1 plan

Andrew Bialecki, Co-Chief Executive Officer, executed 2 separate sales totaling 200,000 shares for $3,437,113.90 on 2026-04-14: 109,142 shares at $17.39 ($1,897,979.38) and 90,858 shares at $16.94 ($1,539,134.52), with a blended average price of $17.19. This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2025-05-20, meaning the sales were scheduled, not discretionary. The filing reflects a conversion of derivative securities; the insider's overall position extends into Form 4 Table II (derivative securities), which remains unpopulated in the database. The elimination of non-derivative holdings requires context from derivative holdings to assess the insider's net position change.

Klaviyo Co-CEO Bialecki sells 200,000 shares ($3.7M) at $18.63 via pre-arranged 10b5-1 plan

Andrew Bialecki, Co-Chief Executive Officer of Klaviyo, sold 200,000 shares at $18.63 on 2026-04-07 for a total value of $3,726,000.00 under a pre-arranged 10b5-1 trading plan adopted on 2025-05-20. This is a scheduled transaction, not a discretionary trade. The sale disposed of 200,000 shares representing a -100.0% reduction in his non-derivative holdings shown in Table I; however, the insider holds derivative securities in Table II that are not yet populated in our database, so this non-derivative reduction does not represent his total position. As a planned trade executed according to a pre-established schedule, the transaction reflects the predetermined execution of that plan rather than a discretionary market judgment.

Klaviyo Co-CEO Bialecki sold 200,000 shares at $19.42 under pre-arranged 10b5-1 plan

Andrew Bialecki, Co-Chief Executive Officer of Klaviyo, Inc., sold 200,000 shares at $19.42 on 2026-03-31, totaling $3,884,000.00, pursuant to a pre-arranged 10b5-1 trading plan adopted on 2025-05-20. The transaction represents a scheduled, non-discretionary sale under a predetermined plan, removing timing-based inferences from typical insider-sell analysis. Notably, this filing contains a derivative-conversion transaction; the insider's post-transaction position includes derivative securities recorded in Form 4 Table II, which is not yet populated in the database, so the zero-share Table I holdings do not represent the insider's complete economic position. The sale reflects an execution of pre-planned portfolio activity rather than a discretionary market decision.

Co-CEO Bialecki sells 200.0K KVYO shares at $18.17 under pre-arranged 10b5-1 plan

Bialecki, Co-Chief Executive Officer, sold 200,000 shares of Klaviyo at $18.17 per share on 2026-03-24 for a total value of $3,634,000.00 under a pre-arranged 10b5-1 trading plan adopted on 2025-05-20. Because this transaction is scheduled under a Rule 10b5-1 plan rather than discretionary, it does not reflect real-time decision-making by the executive. The filing indicates derivative holdings exist (Form 4 Table II), meaning Bialeski's total beneficial position extends beyond the Table I share count and cannot be fully assessed from this transaction alone. The 200,000-share sale represents a conversion of derivative securities, not necessarily a complete reduction of his Klaviyo exposure.

Klaviyo Co-CEO Bialecki sells 200,000 shares for $3.9M via 10b5-1 plan on 2026-03-17

Andrew Bialecki, Co-Chief Executive Officer of Klaviyo, Inc., executed 2 separate sales totaling 200,000 shares (200.0K shares) for $3,873,820.55 ($3.9M) on 2026-03-17, at a blended average price of $19.37 per share. The transaction was part of a pre-arranged 10b5-1 trading plan adopted on 2025-05-20, making it scheduled rather than discretionary. The Form 4 filing indicates the insider held derivative securities whose conversion details are not yet populated in our database; accordingly, the reported zero Form 4 Table I holdings post-transaction do not represent the insider's total position. The sale represents a material reduction in direct equity holdings at the specified transaction prices, executed under a plan established approximately 10 months prior to the trade date.

Co-CEO Bialecki sells 206,827 shares at $19.96 avg for $4.1M under 10b5-1 plan

Bialecki Andrew, Co-Chief Executive Officer, executed 2 separate sales totaling 206,827 shares (206.8K shares) for $4,127,832.92 ($4.1M) at a blended average price of $19.96 on 2026-03-10 under a pre-arranged 10b5-1 trading plan adopted on 2025-05-20. This was a scheduled transaction, not a discretionary trade. The filing notes the presence of derivative securities in Table II that are not yet populated in the database; the Table I common shares represent only part of the insider's total holdings and do not reflect his complete position. Investors should review the derivative conversion details in the full Form 4 filing to understand the full scope of his equity stake at Klaviyo.

Co-CEO Bialecki executes 2 scheduled sales of 200,000 shares for $3.7M under 10b5-1 plan

Andrew Bialecki, Co-Chief Executive Officer of Klaviyo, Inc., executed two separate sales totaling 200,000 shares for $3,727,861.12 on 2026-03-03 under a pre-arranged 10b5-1 trading plan adopted on 2025-05-20. The first sale involved 154,022 shares at $18.86 ($2,904,854.92), and the second involved 45,978 shares at $17.90 ($823,006.20), with a blended average price of $18.64. This is a scheduled, non-discretionary transaction executed pursuant to a prior plan, removing the element of timing discretion from the trade. The filing indicates derivative securities holdings remain in Table II, which are not yet populated in our database; the insider's full position extends beyond the non-derivative shares shown in Table I.