undamentalytics Newsletter

Kisling Ronald W: insider trades

Chief financial officer at Fastly, Inc. No open-market purchases and 40 sales not made under a pre-set plan, reported from October 20, 2021 to July 17, 2025.

What happened after Kisling Ronald W’s sales?

After their sales, the shares moved +5.7% against the index over 12 months on average (a negative figure means selling was the right call); 63% trailed it.

With 296 insiders tested, some will look skilled or unskilled by chance alone: when we replaced each insider’s stocks with random companies bought on the same days, about 5.7 cleared the bar ahead and 23.3 behind. One record on its own proves little.

Trade by trade

Kisling Ronald W: trades against the S&P 500 afterwards
MeasuredTrades countedAverage vs S&P 500MedianWent the right wayYearst-statisticp-valueEvidence
Purchases, 3 months after the report 0 — — — — — — Not enough years
Purchases, 6 months after the report 0 — — — — — — Not enough years
Purchases, 12 months after the report 0 — — — — — — Not enough years
Purchases, 12 months after the trade 0 — — — — — — Not enough years
Sales, 3 months after the report 40 −8.2% −8.6% 68% 5 −1.57 0.19 No reliable evidence
Sales, 12 months after the report 40 +5.7% −22.2% 63% 5 0.15 0.89 No reliable evidence
Sales, 12 months after the trade 40 +2.8% −25.1% 60% 5 0.08 0.94 No reliable evidence

“Average vs S&P 500” is the stock’s return including dividends minus the index’s over the same dates, from the close on the first trading day after the report, or from the close on the trade date. Only windows that have finished are counted. For sales, a negative figure means the stock lagged after it was sold, so selling was the right call (green). “Went the right way” is the share of purchases that beat the index, or of sales that trailed it. The t-statistic uses one average per year of reports, because one person’s trades bunch into the same stock and weeks, and needs trades in at least four different years; the p-value comes from the t distribution with that number of years (with four years, a t of 2 has p = 0.14). “Some evidence” means p under 5%, “strong evidence” p under 1% over at least six years.

Companies traded

CompanyTitle on the latest filingPurchasesSalesFirst reportLatest report
Fastly, Inc. FSLY Chief Financial Officer040October 20, 2021July 17, 2025

Trades and what followed

Moves are against the S&P 500; green means the trade went the insider’s way.

ReportedTradedCompanyTradeValue3 months after report12 months after report12 months after trade
July 17, 2025July 16, 2025 FSLY Sale $51,271 +6.0%+170.6%+183.4%
May 28, 2025May 23, 2025 FSLY Sale $15,257 −5.1%+129.9%+102.2%
May 20, 2025May 16, 2025 FSLY Sale $130,811 −10.3%+94.2%+78.3%
April 17, 2025April 16, 2025 FSLY Sale $28,099 +15.3%+344.4%+341.3%
March 4, 2025February 28, 2025 FSLY Sale $30,983 +7.4%+171.5%+194.5%
February 27, 2025February 25, 2025 FSLY Sale $14,173 +7.4%+194.5%+148.3%
February 21, 2025February 19, 2025 FSLY Sale $90,603 +6.8%+145.2%+115.6%
January 21, 2025January 16, 2025 FSLY Sale $57,059 −31.8%−19.1%−22.6%
December 4, 2024December 2, 2024 FSLY Sale $10,990 −25.7%−4.4%+2.0%
November 27, 2024November 25, 2024 FSLY Sale $23,710 −14.7%+23.6%+27.5%
November 20, 2024November 18, 2024 FSLY Sale $100,638 −8.8%+47.1%+54.2%
October 18, 2024October 16, 2024 FSLY Sale $53,931 +36.3%−6.2%−1.7%
August 27, 2024August 23, 2024 FSLY Sale $18,244 +29.4%+12.6%+0.9%
August 20, 2024August 16, 2024 FSLY Sale $98,466 −1.7%−3.8%−4.9%
July 18, 2024July 16, 2024 FSLY Sale $65,849 −13.5%−22.8%−23.2%
May 28, 2024May 23, 2024 FSLY Sale $26,037 −34.6%−21.7%−28.4%
May 20, 2024May 16, 2024 FSLY Sale $204,248 −30.7%−26.8%−27.1%
April 18, 2024April 16, 2024 FSLY Sale $97,318 −50.2%−64.8%−63.2%
March 4, 2024February 29, 2024 FSLY Sale $17,081 −48.4%−66.0%−68.6%
February 27, 2024February 26, 2024 FSLY Sale $208,100 −47.2%−70.5%−69.7%
February 21, 2024February 16, 2024 FSLY Sale $196,861 −44.8%−72.5%−74.3%
January 19, 2024January 17, 2024 FSLY Sale $98,785 −42.0%−76.4%−75.3%
December 4, 2023November 30, 2023 FSLY Sale $21,087 −35.5%−77.5%−74.6%
November 17, 2023November 16, 2023 FSLY Sale $781,940 −34.0%−97.2%−93.4%
October 19, 2023October 17, 2023 FSLY Sale $112,519 +25.1%−90.6%−89.4%
August 31, 2023August 29, 2023 FSLY Sale $26,021 −27.2%−99.1%−99.7%
August 18, 2023August 16, 2023 FSLY Sale $313,430 −8.0%−95.2%−94.0%
July 20, 2023July 18, 2023 FSLY Sale $130,433 −8.5%−77.8%−82.3%
June 2, 2023May 31, 2023 FSLY Sale $18,459 +40.3%−79.7%−79.9%
May 18, 2023May 16, 2023 FSLY Sale $198,959 +41.4%−62.1%−61.6%
April 20, 2023April 18, 2023 FSLY Sale $81,938 −4.1%−46.0%−48.4%
March 2, 2023March 1, 2023 FSLY Sale $66,800 +4.0%−36.9%−28.7%
February 21, 2023February 16, 2023 FSLY Sale $97,538 −6.9%−33.8%−31.1%
January 20, 2023January 18, 2023 FSLY Sale $61,239 +46.9%+70.3%+57.2%
November 18, 2022November 16, 2022 FSLY Sale $106,937 +73.5%+94.5%+68.1%
August 18, 2022August 16, 2022 FSLY Sale $114,349 −6.0%+81.1%+57.8%
July 20, 2022July 18, 2022 FSLY Sale $61,098 −30.3%+23.1%+36.5%
May 18, 2022May 17, 2022 FSLY Sale $24,012 −23.6%+1.7%+7.5%
January 21, 2022January 19, 2022 FSLY Sale $160,479 −33.1%−57.0%−54.4%
October 20, 2021October 18, 2021 FSLY Sale $226,874 −40.2%−66.9%−65.5%

Open-market purchases and sales of at least $10,000 in companies we cover, from SEC Form 4 filings; sales made under a pre-set Rule 10b5-1 plan are not shown. “Not yet” means the window has not finished or the share price was under $5 at entry. These are the shares’ moves after each trade: they say nothing about why Kisling Ronald W traded and do not suggest the use of non-public information. How every insider compares · the insider trading backtest.