ALGMAllegro MicroSystems, Inc.Technology · Semiconductorsas of 2026-09-16
Horizon

Issued 2026-09-16 at $33.02 · now $33.02 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, ALGM has typically landed between $26.02 and $42.71 — a range of −21.2% to +29.3% from the issuance price $33.02.

Range of outcomes in historically similar periods — not a price prediction. Ranges are scored publicly on /methodology.
  • Actual close
  • Typical path (median)
  • Middle 50% of outcomes
  • 90% range

1,455 overlapping 1 month windows · 2020-10-292026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.756.1%, ≈1,408 obs).

The cone is anchored at the 2026-09-16 issuance close ($33.02) — 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 ALGM has typically landed a month from the 2026-09-16 close of $33.02 — the range is history, not a prediction.

$26.02worst · -21.2%$42.71best · +29.3%
  • now $33.02 (+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). $33.15 (+0.4%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $29.88$36.43
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $26.02$42.71
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 1,455 windows spanning 2020-10-29 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.
StartReturnMax dropMax rise
3 worst
2026-06-30−40.5%−40.5%+0.0%
2025-03-20−38.4%−38.4%+1.3%
2025-03-21−36.9%−37.8%+2.3%
3 best
2025-04-21+64.9%+0.0%+66.4%
2026-03-30+57.2%+0.0%+57.4%
2025-04-22+56.7%+0.0%+64.0%

1,455 overlapping windows · 2020-10-292026-09-16 · 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 ~6 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
67%
+7.7%
n=6
Feb
50%
+3.6%
n=6
Mar
33%
−1.6%
n=6
Apr
33%
−0.4%
n=6
May
83%
+9.2%
n=6
Jun
67%
+12.5%
n=6
Jul
33%
−5.0%
n=6
Aug
33%
−5.8%
n=6
Sep
17%
−6.0%
n=6
Oct
60%
−1.2%
n=5
Nov
67%
+7.6%
n=6
Dec
67%
+5.7%
n=6

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.

Share price & reported tradesMonthly open-market valueReporting lag — trade date to filing date2026-092026-082026-072026-062026-052026-042026-032026-022026-012025-122025-112025-102025-092025-08$70$232026-08-17: 1 insider sale, $45K — Raubacher Jennie2026-08-10: 1 insider sale, $101K — Hagen Erin2026-06-03: 1 insider sale, $264K — Madormo Richard2026-05-22: 1 insider sale, $206K — Coleman Troy2026-05-21: 1 insider sale, $234K — Webster Roald Graham2026-05-18: 1 insider sale, $110K — Kent Ian2026-05-14: 1 insider sale, $760K — Lynch Susan D2026-05-11: 2 insider sales, $1.8M — Doogue Michael, Briansky Sharon2026-03-02: 2 insider sales, $431K — Briansky Sharon, Hagen Erin2026-02-17: 1 insider sale, $385K — Briansky Sharon2025-12-10: 1 insider sale, $836K — Briansky Sharon2025-08-22: 1 insider sale, $271K — Webster Roald Graham2025-08-12: 1 insider sale, $223K — Lury Richard R.2025-08: 3 open-market sales, $651K2025-12: 1 open-market sale, $836K2026-02: 1 open-market sale, $385K2026-03: 2 open-market sales, $431K2026-05: 6 open-market sales, $3.2M2026-06: 1 open-market sale, $264K2026-08: 2 open-market sales, $147K↑ buys↓ salesdirector Raubacher Jennie — Sale on 2026-08-17, filed 1 day after the tradeofficer Hagen Erin — Sale on 2026-08-10, filed 2 days after the tradeofficer Madormo Richard — Sale on 2026-06-03, filed 1 day after the tradeofficer Coleman Troy — Sale on 2026-05-22, filed 4 days after the tradeofficer Webster Roald Graham — Sale on 2026-05-21, filed 1 day after the tradeofficer Kent Ian — Sale on 2026-05-18, filed 1 day after the tradedirector Lynch Susan D — Sale on 2026-05-14, filed 1 day after the tradedirector Doogue Michael — Sale on 2026-05-11, filed 2 days after the tradeofficer Briansky Sharon — Sale on 2026-05-11, filed 2 days after the tradeofficer Briansky Sharon — Sale on 2026-03-02, filed 1 day after the tradeofficer Hagen Erin — Sale on 2026-03-02, filed 1 day after the tradeofficer Briansky Sharon — Sale on 2026-02-17, filed 1 day after the tradeofficer Briansky Sharon — Sale on 2025-12-10, filed 2 days after the tradeofficer Webster Roald Graham — Sale on 2025-08-22, filed 3 days after the tradedirector Lury Richard R. — Sale on 2025-08-12, filed 1 day after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-08-17Raubacher JenniedirectorSale1,000 @ $45.32$45K−6.7% of holding−23.0%not yet — horizon still open13,976Form 4 · filed 1 day after the trade
2026-08-10Hagen ErinofficerSale2,285 @ $44.39$101K−6.9% of holding−14.2%not yet — horizon still open31,052Form 4 · filed 2 days after the trade
2026-06-03Madormo RichardofficerSale5,000 @ $52.72$264K−6.7% of holding+6.6%not yet — horizon still open69,687Form 4 · filed 1 day after the trade
2026-05-22Coleman TroyofficerSale4,500 @ $45.72$206K−5.5% of holding+22.0%not yet — horizon still open77,476Form 4 · filed 4 days after the trade
2026-05-21Webster Roald GrahamofficerSale5,217 @ $44.88$234K−28.5% of holding+25.2%not yet — horizon still open13,106Form 4 · filed 1 day after the trade
2026-05-18Kent IanofficerSale2,642 @ $41.56$110K−9.4% of holding+30.2%not yet — horizon still open25,392Form 4 · filed 1 day after the trade
2026-05-14Lynch Susan DdirectorSale16,711 @ $45.46$760K−56.6% of holding+21.4%not yet — horizon still open12,805Form 4 · filed 1 day after the trade
2026-05-11Doogue MichaeldirectorSale30,089 @ $47.23$1.4M−10.6% of holding−6.1%not yet — horizon still open252,797Form 4 · filed 2 days after the trade
2026-05-11Briansky SharonofficerSale8,948 @ $47.54$425K−10.6% of holding−6.1%not yet — horizon still open75,232Form 4 · filed 2 days after the trade
2026-03-02Briansky SharonofficerSale9,727 @ $35.00$340K−10.4% of holding−8.8%−13.3%84,180Form 4 · filed 1 day after the trade
2026-03-02Hagen ErinofficerSale2,598 @ $35.00$91K−7.9% of holding−8.8%−13.3%30,094Form 4 · filed 1 day after the trade
2026-02-17Briansky SharonofficerSale9,258 @ $41.56$385K−8.2% of holding−21.3%−18.5%103,014Form 4 · filed 1 day after the trade
2025-12-10Briansky SharonofficerSale27,873 @ $30.00$836K−18.7% of holding+1.7%+63.7%121,263Form 4 · filed 2 days after the trade
2025-08-22Webster Roald GrahamofficerSale8,266 @ $32.81$271K−32.3% of holding−5.3%+14.4%17,300Form 4 · filed 3 days after the trade
2025-08-12Lury Richard R.directorSale7,000 @ $31.81$223K−27.1% of holding−8.3%+26.0%18,857Form 4 · filed 1 day after the trade
2025-08-04Hagen ErinofficerSale5,043 @ $31.18$157K−12.7% of holding−7.2%+13.7%34,688Form 4 · filed 1 day after the trade
2025-06-11Lury Richard R.directorSale3,100 @ $30.45$94K−13.5% of holding+17.6%−17.6%19,925Form 4 · filed 1 day after the trade
2025-06-04Lury Richard R.directorSale6,849 @ $27.60$189K−22.9% of holding+21.9%−12.2%23,025Form 4 · filed 2 days after the trade

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.

64 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.

DatePersonRoleActionSharesOwned afterFiling
2026-08-05WHITE BRIAN CdirectorAward / grant4,2514,251Form 4
2026-08-05Raubacher JenniedirectorAward / grant4,2514,251Form 4
2026-08-05Palepu Krishna G.directorAward / grant4,25114,212Form 4
2026-08-05PUMA MARY GdirectorAward / grant4,25121,734Form 4
2026-08-05MARTIN JOSEPH RdirectorAward / grant4,25139,430Form 4
2026-08-05Suzuki YoshihirodirectorAward / grant4,251217,811Form 4
2026-08-05Willett RobertdirectorAward / grant4,2514,251Form 4
2026-06-17WHITE BRIAN CdirectorAward / grant594594Form 4
2026-05-16Doogue MichaeldirectorWithheld for tax60,508279,076Form 4
2026-05-16D'Antilio DerekofficerWithheld for tax37,840238,813Form 4
2026-05-16Briansky SharonofficerWithheld for tax13,94279,753Form 4
2026-05-16Coleman TroyofficerWithheld for tax9,67081,976Form 4
2026-05-16Hagen ErinofficerWithheld for tax5,81533,337Form 4
2026-05-16Madormo RichardofficerWithheld for tax5,43974,687Form 4
2026-05-16Webster Roald GrahamofficerWithheld for tax4,27718,323Form 4
2026-05-16Kent IanofficerWithheld for tax2,34528,034Form 4
2026-05-13Kent IanofficerAward / grant8,49230,379Form 4
2026-05-13Webster Roald GrahamofficerAward / grant4,75622,056Form 4
2026-05-13D'Antilio DerekofficerAward / grant29,439246,215Form 4
2026-05-13D'Antilio DerekofficerAward / grant30,438276,653Form 4
2026-05-13Willett RobertdirectorAward / grant1,0941,094Form 4
2026-05-13Webster Roald GrahamofficerAward / grant54422,600Form 4
2026-05-13Doogue MichaeldirectorAward / grant77,135255,884Form 4
2026-05-13Doogue MichaeldirectorAward / grant83,700339,584Form 4
2026-05-13Coleman TroyofficerAward / grant18,11691,646Form 4
2026-05-13Briansky SharonofficerAward / grant15,85291,084Form 4
2026-05-13Briansky SharonofficerAward / grant2,61193,695Form 4
2026-05-13Hagen ErinofficerAward / grant9,05839,152Form 4
2026-05-13Madormo RichardofficerAward / grant19,81580,126Form 4
2026-03-24Madormo RichardofficerDisposition6,49860,311Form 4
2026-02-27D'Antilio DerekofficerWithheld for tax9,995216,776Form 4
2026-02-27Briansky SharonofficerWithheld for tax9,10793,907Form 4
2026-02-27Hagen ErinofficerWithheld for tax1,99632,692Form 4
2026-02-13D'Antilio DerekofficerWithheld for tax17,808226,771Form 4
2026-02-13Briansky SharonofficerWithheld for tax8,991112,272Form 4
2026-02-02Kent IanofficerAward / grant9,18321,887Form 4
2025-11-11Coleman TroyofficerAward / grant73,53073,530Form 4
2025-08-07Raubacher JenniedirectorAward / grant5,93214,976Form 4
2025-08-07Lury Richard R.directorAward / grant5,93225,857Form 4
2025-08-07Lynch Susan DdirectorAward / grant5,93229,516Form 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.