Issued 2026-09-16 at $191.58 · now $191.58 (2026-09-16, +0.0% since)
Based on its own history, a month from the 2026-09-16 close, ZS has typically landed between $148.64 and $237.54 — a range of −22.4% to +24.0% from the issuance price $191.58.
- Actual close
- Typical path (median)
- Middle 50% of outcomes
- 90% range
2,116 overlapping 1 month windows · 2018-03-16 – 2026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.7–56.1%, ≈1,408 obs).
The cone is anchored at the 2026-09-16 issuance close ($191.58) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.
Where ZS has typically landed a month from the 2026-09-16 close of $191.58 — the range is history, not a prediction.
- now $191.58 (+0.0%)
- typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $193.42 (+1.0%)
- middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $174.24–$212.6
- 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $148.64–$237.54
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 2,116 windows spanning 2018-03-16 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
| Start | Return | Max drop | Max rise |
|---|---|---|---|
| 3 worst | |||
| 2022-04-19 | −44.0% | −44.0% | +0.0% |
| 2019-08-14 | −41.7% | −41.7% | +0.0% |
| 2019-08-13 | −41.7% | −41.7% | +0.0% |
| 3 best | |||
| 2023-05-05 | +71.0% | +0.0% | +71.0% |
| 2023-05-04 | +68.7% | +0.0% | +68.7% |
| 2020-03-16 | +67.3% | +0.0% | +67.3% |
2,116 overlapping windows · 2018-03-16 – 2026-09-16 · not cherry-picked
Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.
iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~9 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.Jan
63%
+5.3%
n=8
Feb
50%
−3.8%
n=8
Mar
50%
+1.2%
n=8
Apr
44%
−2.2%
n=9
May
67%
+10.1%
n=9
Jun
89%
+11.6%
n=9
Jul
67%
+4.6%
n=9
Aug
67%
+7.1%
n=9
Sep
33%
−5.0%
n=9
Oct
50%
+1.5%
n=8
Nov
75%
+6.4%
n=8
Dec
25%
−2.2%
n=8
Up-frequency and average month-over-month return · historical frequency, not a prediction
Reported insider & political trades
Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.
| Date | Person | Role | Action | Shares @ price | Value | Ownership Δ | vs S&P 1m | vs S&P 6m | Owned after | Filing |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-25 | RUBIN KEVIN | officer | Sale | 291 @ $172.53 | $50K | −0.7% of holding | not yet — horizon still open | not yet — horizon still open | 41,107 | Form 4 · filed 1 day after the trade |
| 2026-08-25 | RUBIN KEVIN | officer | Sale | 92 @ $173.53 | $16K | −0.2% of holding | not yet — horizon still open | not yet — horizon still open | 41,015 | Form 4 · filed 1 day after the trade |
| 2026-08-25 | RUBIN KEVIN | officer | Sale | 66 @ $175.78 | $12K | −0.2% of holding | not yet — horizon still open | not yet — horizon still open | 40,901 | Form 4 · filed 1 day after the trade |
| 2026-08-25 | RUBIN KEVIN | officer | Sale | 48 @ $174.54 | $8K | −0.1% of holding | not yet — horizon still open | not yet — horizon still open | 40,967 | Form 4 · filed 1 day after the trade |
| 2026-08-25 | RUBIN KEVIN | officer | Sale | 6 @ $176.49 | $1K | −0.0% of holding | not yet — horizon still open | not yet — horizon still open | 40,895 | Form 4 · filed 1 day after the trade |
| 2026-07-27 | RUBIN KEVIN | officer | Sale | 142 @ $148.81 | $21K | −0.3% of holding | +10.7% | not yet — horizon still open | 41,398 | Form 4 · filed 1 day after the trade |
| 2026-07-27 | RUBIN KEVIN | officer | Sale | 118 @ $147.74 | $17K | −0.3% of holding | +10.7% | not yet — horizon still open | 41,540 | Form 4 · filed 1 day after the trade |
| 2026-07-27 | RUBIN KEVIN | officer | Sale | 96 @ $146.75 | $14K | −0.2% of holding | +10.7% | not yet — horizon still open | 41,658 | Form 4 · filed 1 day after the trade |
| 2026-07-27 | RUBIN KEVIN | officer | Sale | 75 @ $145.71 | $11K | −0.2% of holding | +10.7% | not yet — horizon still open | 41,754 | Form 4 · filed 1 day after the trade |
| 2026-07-27 | RUBIN KEVIN | officer | Sale | 72 @ $144.74 | $10K | −0.2% of holding | +10.7% | not yet — horizon still open | 41,829 | Form 4 · filed 1 day after the trade |
| 2026-07-06 | Schlossman Robert | officer | Sale | 122 @ $150.00 | $18K | −0.2% of holding | +5.8% | not yet — horizon still open | 69,244 | Form 4 · filed 1 day after the trade |
| 2026-06-25 | RUBIN KEVIN | officer | Sale | 1,696 @ $124.07 | $210K | −3.8% of holding | +18.3% | not yet — horizon still open | 42,701 | Form 4 · filed 1 day after the trade |
| 2026-06-25 | RUBIN KEVIN | officer | Sale | 560 @ $124.87 | $70K | −1.3% of holding | +18.3% | not yet — horizon still open | 42,141 | Form 4 · filed 1 day after the trade |
| 2026-06-25 | RUBIN KEVIN | officer | Sale | 504 @ $123.18 | $62K | −1.1% of holding | +18.3% | not yet — horizon still open | 44,397 | Form 4 · filed 1 day after the trade |
| 2026-06-25 | RUBIN KEVIN | officer | Sale | 228 @ $125.97 | $29K | −0.5% of holding | +18.3% | not yet — horizon still open | 41,913 | Form 4 · filed 1 day after the trade |
| 2026-06-25 | RUBIN KEVIN | officer | Sale | 12 @ $126.79 | $2K | −0.0% of holding | +18.3% | not yet — horizon still open | 41,901 | Form 4 · filed 1 day after the trade |
| 2026-06-22 | Geller Adam | officer | Sale | 2,817 @ $122.60 | $345K | −6.2% of holding | +14.3% | not yet — horizon still open | 42,314 | Form 4 · filed 1 day after the trade |
| 2026-06-17 | BEER JAMES A | director | Sale | 177 @ $125.50 | $22K | −4.0% of holding | +20.0% | not yet — horizon still open | 4,207 | Form 4 · filed same day |
| 2026-06-16 | Rich Michael J. | officer | Sale | 4,184 @ $126.43 | $529K | −4.0% of holding | +18.5% | not yet — horizon still open | 100,301 | Form 4 · filed 1 day after the trade |
| 2026-06-16 | Schlossman Robert | officer | Sale | 3,146 @ $126.43 | $398K | −4.3% of holding | +18.5% | not yet — horizon still open | 69,366 | Form 4 · filed 1 day after the trade |
| 2026-06-16 | Chaudhry Jagtar Singh | director | Sale | 2,878 @ $126.43 | $364K | −0.8% of holding | +18.5% | not yet — horizon still open | 343,038 | Form 4 · filed 1 day after the trade |
| 2026-06-16 | Geller Adam | officer | Sale | 1,940 @ $126.43 | $245K | −4.1% of holding | +18.5% | not yet — horizon still open | 45,131 | Form 4 · filed 1 day after the trade |
| 2026-06-16 | RUBIN KEVIN | officer | Sale | 1,686 @ $126.43 | $213K | −3.6% of holding | +18.5% | not yet — horizon still open | 44,901 | Form 4 · filed 1 day after the trade |
| 2026-03-18 | Geller Adam | officer | Sale | 2,094 @ $153.53 | $321K | −4.3% of holding | −21.3% | not yet — horizon still open | 46,949 | Form 4 · filed 1 day after the trade |
| 2026-03-18 | BEER JAMES A | director | Sale | 177 @ $153.53 | $27K | −3.9% of holding | −21.3% | not yet — horizon still open | 4,384 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | Rich Michael J. | officer | Sale | 3,147 @ $156.59 | $493K | −2.9% of holding | −18.8% | +9.8% | 104,350 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | Judge Raj | director | Sale | 2,488 @ $156.59 | $390K | −3.5% of holding | −18.8% | +9.8% | 67,906 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | Schlossman Robert | officer | Sale | 2,263 @ $156.59 | $354K | −3.0% of holding | −18.8% | +9.8% | 72,390 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | Chaudhry Jagtar Singh | director | Sale | 1,941 @ $156.59 | $304K | −0.6% of holding | −18.8% | +9.8% | 345,916 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | RUBIN KEVIN | officer | Sale | 1,682 @ $156.59 | $263K | −3.5% of holding | −18.8% | +9.8% | 46,479 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | Geller Adam | officer | Sale | 1,485 @ $156.59 | $233K | −2.9% of holding | −18.8% | +9.8% | 49,043 | Form 4 · filed 2 days after the trade |
| 2026-01-02 | BEER JAMES A | director | Sale | 653 @ $226.72 | $148K | −15.8% of holding | −15.7% | −42.2% | 3,485 | Form 4 · filed same day |
| 2025-12-26 | Brown Andrew William Fraser | director | Sale | 5,000 @ $0.00 | $0 | −18.4% of holding | −7.9% | −47.5% | 22,216 | Form 4 · filed 3 days after the trade |
| 2025-12-17 | Schlossman Robert | officer | Sale | 2,349 @ $232.79 | $547K | −3.1% of holding | −10.1% | −57.0% | 74,653 | Form 4 · filed same day |
| 2025-12-17 | Geller Adam | officer | Sale | 1,620 @ $232.79 | $377K | −3.1% of holding | −10.1% | −57.0% | 50,528 | Form 4 · filed same day |
| 2025-12-16 | Rich Michael J. | officer | Sale | 4,100 @ $230.82 | $946K | −3.7% of holding | −10.3% | −57.3% | 107,497 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | Judge Raj | director | Sale | 3,438 @ $230.82 | $794K | −4.7% of holding | −10.3% | −57.3% | 70,394 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | RUBIN KEVIN | officer | Sale | 3,303 @ $230.82 | $762K | −6.4% of holding | −10.3% | −57.3% | 48,161 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | Schlossman Robert | officer | Sale | 3,084 @ $230.82 | $712K | −3.9% of holding | −10.3% | −57.3% | 77,002 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | Chaudhry Jagtar Singh | director | Sale | 2,843 @ $230.82 | $656K | −0.8% of holding | −10.3% | −57.3% | 347,857 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | Geller Adam | officer | Sale | 2,060 @ $230.82 | $475K | −3.8% of holding | −10.3% | −57.3% | 52,148 | Form 4 · filed 1 day after the trade |
| 2025-10-24 | Schlossman Robert | officer | Sale | 3,200 @ $325.00 | $1.0M | −3.8% of holding | −11.9% | −63.6% | 80,086 | Form 4 · filed same day |
| 2025-10-02 | Schlossman Robert | officer | Sale | 4,532 @ $306.12 | $1.4M | −5.6% of holding | +5.7% | −53.7% | 76,706 | Form 4 · filed same day |
| 2025-10-02 | Schlossman Robert | officer | Sale | 900 @ $304.00 | $274K | −1.1% of holding | +5.7% | −53.7% | 81,538 | Form 4 · filed same day |
| 2025-10-02 | Schlossman Robert | officer | Sale | 700 @ $302.92 | $212K | −0.8% of holding | +5.7% | −53.7% | 82,438 | Form 4 · filed same day |
| 2025-10-02 | Schlossman Robert | officer | Sale | 574 @ $307.47 | $176K | −0.7% of holding | +5.7% | −53.7% | 76,132 | Form 4 · filed same day |
| 2025-10-02 | Schlossman Robert | officer | Sale | 300 @ $304.67 | $91K | −0.4% of holding | +5.7% | −53.7% | 81,238 | Form 4 · filed same day |
| 2025-09-17 | Geller Adam | officer | Sale | 4,141 @ $284.56 | $1.2M | −8.2% of holding | +6.6% | −45.1% | 46,501 | Form 4 · filed same day |
| 2025-09-17 | Geller Adam | officer | Sale | 3,023 @ $285.45 | $863K | −6.5% of holding | +6.6% | −45.1% | 43,478 | Form 4 · filed same day |
| 2025-09-17 | Geller Adam | officer | Sale | 1,700 @ $283.33 | $482K | −3.2% of holding | +6.6% | −45.1% | 50,642 | Form 4 · filed same day |
| 2025-09-17 | Geller Adam | officer | Sale | 1,600 @ $282.16 | $451K | −3.0% of holding | +6.6% | −45.1% | 52,342 | Form 4 · filed same day |
| 2025-09-16 | Rich Michael J. | officer | Sale | 11,718 @ $280.70 | $3.3M | −10.4% of holding | +6.2% | −45.5% | 100,822 | Form 4 · filed 1 day after the trade |
| 2025-09-16 | Geller Adam | officer | Sale | 11,193 @ $280.70 | $3.1M | −17.2% of holding | +6.2% | −45.5% | 53,942 | Form 4 · filed 1 day after the trade |
| 2025-09-16 | Judge Raj | director | Sale | 4,524 @ $280.70 | $1.3M | −5.8% of holding | +6.2% | −45.5% | 73,832 | Form 4 · filed 1 day after the trade |
| 2025-09-16 | Schlossman Robert | officer | Sale | 3,832 @ $280.70 | $1.1M | −4.4% of holding | +6.2% | −45.5% | 83,138 | Form 4 · filed 1 day after the trade |
| 2025-09-16 | Chaudhry Jagtar Singh | director | Sale | 2,865 @ $280.70 | $804K | −0.8% of holding | +6.2% | −45.5% | 350,700 | Form 4 · filed 1 day after the trade |
| 2025-06-18 | Geller Adam | officer | Sale | 1,828 @ $306.14 | $560K | −3.6% of holding | −11.1% | −38.9% | 48,647 | Form 4 · filed same day |
| 2025-06-18 | Schlossman Robert | officer | Sale | 1,660 @ $304.64 | $506K | −1.8% of holding | −11.1% | −38.9% | 90,484 | Form 4 · filed same day |
| 2025-06-18 | Geller Adam | officer | Sale | 1,534 @ $307.14 | $471K | −3.2% of holding | −11.1% | −38.9% | 47,113 | Form 4 · filed same day |
| 2025-06-18 | Schlossman Robert | officer | Sale | 1,014 @ $305.60 | $310K | −1.1% of holding | −11.1% | −38.9% | 89,270 | Form 4 · filed same day |
The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.
36 award / exercise / gift records — not counted as purchases
Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.
| Date | Person | Role | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-01-12 | BEER JAMES A | director | Award / grant | 1,076 | 4,561 | Form 4 |
| 2026-01-12 | Darling Scott C | director | Award / grant | 1,076 | 5,351 | Form 4 |
| 2026-01-12 | Brown Andrew William Fraser | director | Award / grant | 1,076 | 23,292 | Form 4 |
| 2026-01-12 | BLASING KAREN | director | Award / grant | 1,076 | 42,757 | Form 4 |
| 2026-01-12 | Naughton Eileen | director | Award / grant | 1,076 | 7,745 | Form 4 |
| 2026-01-12 | Schneider David | director | Award / grant | 1,076 | 24,912 | Form 4 |
| 2026-01-12 | Giancarlo Charles H | director | Award / grant | 1,076 | 145,451 | Form 4 |
| 2025-10-15 | Rich Michael J. | officer | Award / grant | 10,730 | 111,552 | Form 4 |
| 2025-10-15 | Schlossman Robert | officer | Award / grant | 7,154 | 83,286 | Form 4 |
| 2025-10-15 | Geller Adam | officer | Award / grant | 10,730 | 54,208 | Form 4 |
| 2025-09-25 | Chaudhry Jagtar Singh | director | Gift | 21,861 | 24,341,267 | Form 4 |
| 2025-09-15 | Rich Michael J. | officer | Award / grant | 14,337 | 112,540 | Form 4 |
| 2025-09-15 | Schlossman Robert | officer | Gift | 2,000 | 86,970 | Form 4 |
| 2025-09-15 | Geller Adam | officer | Award / grant | 18,322 | 65,135 | Form 4 |
| 2025-09-15 | Judge Raj | director | Award / grant | 2,067 | 78,356 | Form 4 |
| 2025-06-04 | Brown Andrew William Fraser | director | Option exercise | 20,333 | 47,549 | Form 4 |
| 2025-06-04 | Brown Andrew William Fraser | director | Option exercise | 20,333 | 0 | Form 4 |
| 2025-06-03 | Judge Raj | director | Award / grant | 9,948 | 79,246 | Form 4 |
| 2025-06-03 | Judge Raj | director | Award / grant | 67,148 | 69,298 | Form 4 |
| 2025-06-03 | RUBIN KEVIN | officer | Award / grant | 50,000 | 50,000 | Form 4 |
| 2025-06-03 | RUBIN KEVIN | officer | Award / grant | 51,383 | 51,383 | Form 4 |
| 2025-04-02 | Brown Andrew William Fraser | director | Option exercise | 10,000 | 37,216 | Form 4 |
| 2025-04-02 | Brown Andrew William Fraser | director | Option exercise | 10,000 | 20,333 | Form 4 |
| 2025-01-10 | Giancarlo Charles H | director | Award / grant | 1,309 | 194,375 | Form 4 |
| 2025-01-10 | Darling Scott C | director | Award / grant | 1,309 | 4,275 | Form 4 |
| 2025-01-10 | Naughton Eileen | director | Award / grant | 1,309 | 6,669 | Form 4 |
| 2025-01-10 | Schneider David | director | Award / grant | 1,309 | 23,836 | Form 4 |
| 2025-01-10 | BEER JAMES A | director | Award / grant | 1,309 | 4,138 | Form 4 |
| 2025-01-10 | BLASING KAREN | director | Award / grant | 1,309 | 41,681 | Form 4 |
| 2025-01-10 | Brown Andrew William Fraser | director | Award / grant | 1,309 | 27,216 | Form 4 |
| 2024-12-09 | Chaudhry Jagtar Singh | director | Gift | 26,101 | 24,363,128 | Form 4 |
| 2024-12-05 | Geller Adam | officer | Award / grant | 50,000 | 50,000 | Form 4 |
| 2024-12-05 | Nair Syam | officer | Award / grant | 16,428 | 146,548 | Form 4 |
| 2024-12-05 | Rich Michael J. | officer | Award / grant | 16,428 | 119,687 | Form 4 |
| 2024-12-05 | Schlossman Robert | officer | Award / grant | 10,952 | 116,758 | Form 4 |
| 2024-12-05 | Geller Adam | officer | Award / grant | 53,362 | 53,362 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.
Congressional disclosures
No congressional trades disclosed for this company.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.