BEAMBeam Therapeutics Inc.as of 2026-09-16
Horizon

Issued 2026-09-16 at $23.10 · now $23.10 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, BEAM has typically landed between $17.08 and $30.70 — a range of −26.1% to +32.9% from the issuance price $23.10.

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

1,628 overlapping 1 month windows · 2020-02-06 – 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 ($23.10) — 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 BEAM has typically landed a month from the 2026-09-16 close of $23.1 — the range is history, not a prediction.

$17.08worst · -26.1%$30.7best · +32.9%
  • now $23.1 (+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). $22.61 (-2.1%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $19.9–$25.31
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $17.08–$30.7
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 1,628 windows spanning 2020-02-06 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
2020-02-13−54.4%−54.4%+0.0%
2025-03-12−46.6%−47.0%+0.0%
2025-03-07−46.3%−46.4%+0.0%
3 best
2020-11-12+144.4%+0.0%+144.4%
2020-11-19+125.6%+0.0%+125.6%
2020-11-25+114.0%+0.0%+114.0%

1,628 overlapping windows · 2020-02-06 – 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 ~7 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
50%
+1.6%
n=6
Feb
67%
+10.8%
n=6
Mar
0%
−19.9%
n=7
Apr
57%
−7.1%
n=7
May
57%
+7.6%
n=7
Jun
86%
+13.5%
n=7
Jul
43%
+4.1%
n=7
Aug
43%
−1.4%
n=7
Sep
29%
−2.0%
n=7
Oct
50%
+2.3%
n=6
Nov
83%
+16.6%
n=6
Dec
50%
+7.6%
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$38$162026-07-27: 1 insider sale, $429K — Simon Amy2026-06-30: 3 insider sales, $871K — Evans John M., Simon Amy …2026-06-29: 2 insider sales, $887K — Evans John M. …2026-06-26: 1 insider sale, $8.9M — FMR LLC2026-06-25: 1 insider sale, $1.2M — FMR LLC2026-04-01: 5 insider sales, $1.4M — Evans John M., Ciaramella Giuseppe, Simon Amy, Bellon Christine …2026-03-31: 1 insider sale, $569K — Evans John M.2026-03-30: 1 insider sale, $559K — Evans John M.2026-02-24: 1 insider sale, $1.1M — Ciaramella Giuseppe2026-01-30: 2 insider sales, $709K — Evans John M. …2026-01-29: 2 insider sales, $735K — Evans John M. …2026-01-22: 2 insider sales, $264K — Cavanagh Bethany J, Bellon Christine2026-01-20: 1 insider sale, $91K — Cavanagh Bethany J2026-01-15: 3 insider sales, $645K — Bellon Christine …2025-12-31: 2 insider sales, $205K — Emany Sravan Kumar, Bellon Christine2025-10-27: 1 insider sale, $12K — FMR LLC2025-10-02: 1 insider sale, $616K — Evans John M.2025-10-01: 3 insider sales, $633K — Evans John M., Cavanagh Bethany J, Bellon Christine2025-10: 5 open-market sales, $1.3M2025-12: 2 open-market sales, $205K2026-01: 10 open-market sales, $2.4M2026-02: 1 open-market sale, $1.1M2026-03: 2 open-market sales, $1.1M2026-04: 5 open-market sales, $1.4M2026-06: 7 open-market sales, $11.8M2026-07: 1 open-market sale, $429K↑ buys↓ salesofficer Simon Amy — Sale on 2026-07-27, filed 2 days after the tradedirector Evans John M. — Sale on 2026-06-30, filed 1 day after the tradedirector Evans John M. — Sale on 2026-06-30, filed 1 day after the tradeofficer Simon Amy — Sale on 2026-06-30, filed 2 days after the tradedirector Evans John M. — Sale on 2026-06-29, filed 2 days after the tradedirector Evans John M. — Sale on 2026-06-29, filed 2 days after the tradeother FMR LLC — Sale on 2026-06-26, filed 3 days after the tradeother FMR LLC — Sale on 2026-06-25, filed 4 days after the tradedirector Evans John M. — Sale on 2026-04-01, filed 5 days after the tradeofficer Ciaramella Giuseppe — Sale on 2026-04-01, filed 5 days after the tradeofficer Simon Amy — Sale on 2026-04-01, filed 5 days after the tradeofficer Bellon Christine — Sale on 2026-04-01, filed 5 days after the tradeofficer Cavanagh Bethany J — Sale on 2026-04-01, filed 5 days after the tradedirector Evans John M. — Sale on 2026-03-31, filed 1 day after the tradedirector Evans John M. — Sale on 2026-03-30, filed 2 days after the tradeofficer Ciaramella Giuseppe — Sale on 2026-02-24, filed 2 days after the tradedirector Evans John M. — Sale on 2026-01-30, filed 3 days after the tradedirector Evans John M. — Sale on 2026-01-30, filed 3 days after the tradedirector Evans John M. — Sale on 2026-01-29, filed 4 days after the tradedirector Evans John M. — Sale on 2026-01-29, filed 4 days after the tradeofficer Cavanagh Bethany J — Sale on 2026-01-22, filed 4 days after the tradeofficer Bellon Christine — Sale on 2026-01-22, filed 4 days after the tradeofficer Cavanagh Bethany J — Sale on 2026-01-20, filed 1 day after the tradeofficer Bellon Christine — Sale on 2026-01-15, filed 5 days after the tradeofficer Bellon Christine — Sale on 2026-01-15, filed 5 days after the tradeofficer Bellon Christine — Sale on 2026-01-15, filed 5 days after the tradedirector Emany Sravan Kumar — Sale on 2025-12-31, filed 5 days after the tradeofficer Bellon Christine — Sale on 2025-12-31, filed 5 days after the tradeother FMR LLC — Sale on 2025-10-27, filed 2 days after the tradedirector Evans John M. — Sale on 2025-10-02, filed 1 day after the tradedirector Evans John M. — Sale on 2025-10-01, filed 2 days after the tradeofficer Cavanagh Bethany J — Sale on 2025-10-01, filed 2 days after the tradeofficer Bellon Christine — Sale on 2025-10-01, filed 2 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-07-27Simon AmyofficerSale16,667 @ $25.74$429K−16.3% of holding−1.8%not yet — horizon still open85,696Form 4 · filed 2 days after the trade
2026-06-30Evans John M.directorSale23,100 @ $34.26$791K−2.2% of holding−24.5%not yet — horizon still open1,049,105Form 4 · filed 1 day after the trade
2026-06-30Evans John M.directorSale1,900 @ $34.84$66K−0.2% of holding−24.5%not yet — horizon still open1,047,205Form 4 · filed 1 day after the trade
2026-06-30Simon AmyofficerSale373 @ $34.73$13K−0.4% of holding−24.5%not yet — horizon still open102,363Form 4 · filed 2 days after the trade
2026-06-29Evans John M.directorSale13,421 @ $35.13$472K−1.3% of holding−28.2%not yet — horizon still open1,058,784Form 4 · filed 2 days after the trade
2026-06-29Evans John M.directorSale11,579 @ $35.91$416K−1.1% of holding−28.2%not yet — horizon still open1,047,205Form 4 · filed 2 days after the trade
2026-06-26FMR LLCotherSale251,488 @ $35.26$8.9M−22.7% of holding−30.6%not yet — horizon still open854,583Form 4 · filed 3 days after the trade
2026-06-25FMR LLCotherSale33,372 @ $35.12$1.2M−2.9% of holding−26.5%not yet — horizon still open1,106,071Form 4 · filed 4 days after the trade
2026-04-01Evans John M.directorSale30,078 @ $24.58$739K−2.8% of holding+16.8%not yet — horizon still open1,047,205Form 4 · filed 5 days after the trade
2026-04-01Ciaramella GiuseppeofficerSale11,810 @ $24.58$290K−5.1% of holding+16.8%not yet — horizon still open218,406Form 4 · filed 5 days after the trade
2026-04-01Simon AmyofficerSale6,700 @ $24.58$165K−6.1% of holding+16.8%not yet — horizon still open102,735Form 4 · filed 5 days after the trade
2026-04-01Bellon ChristineofficerSale5,956 @ $24.58$146K−5.1% of holding+16.8%not yet — horizon still open109,711Form 4 · filed 5 days after the trade
2026-04-01Cavanagh Bethany JofficerSale3,242 @ $24.58$80K−6.0% of holding+16.8%not yet — horizon still open51,171Form 4 · filed 5 days after the trade
2026-03-31Evans John M.directorSale25,000 @ $22.76$569K−2.5% of holding+16.8%not yet — horizon still open986,667Form 4 · filed 1 day after the trade
2026-03-30Evans John M.directorSale25,000 @ $22.37$559K−2.5% of holding+21.6%not yet — horizon still open986,667Form 4 · filed 2 days after the trade
2026-02-24Ciaramella GiuseppeofficerSale35,000 @ $32.00$1.1M−15.5% of holding−24.2%−37.5%190,216Form 4 · filed 2 days after the trade
2026-01-30Evans John M.directorSale22,094 @ $28.27$625K−2.2% of holding+0.2%−6.5%989,573Form 4 · filed 3 days after the trade
2026-01-30Evans John M.directorSale2,906 @ $29.00$84K−0.3% of holding+0.2%−6.5%986,667Form 4 · filed 3 days after the trade
2026-01-29Evans John M.directorSale16,333 @ $29.19$477K−1.6% of holding−0.9%−20.4%995,334Form 4 · filed 4 days after the trade
2026-01-29Evans John M.directorSale8,667 @ $29.74$258K−0.9% of holding−0.9%−20.4%986,667Form 4 · filed 4 days after the trade
2026-01-22Cavanagh Bethany JofficerSale6,198 @ $35.00$217K−15.1% of holding−16.4%−34.1%34,813Form 4 · filed 4 days after the trade
2026-01-22Bellon ChristineofficerSale1,371 @ $34.00$47K−1.4% of holding−16.4%−34.1%95,667Form 4 · filed 4 days after the trade
2026-01-20Cavanagh Bethany JofficerSale3,034 @ $30.12$91K−6.9% of holding−11.0%−24.9%41,011Form 4 · filed 1 day after the trade
2026-01-15Bellon ChristineofficerSale15,959 @ $34.72$554K−14.1% of holding−12.9%−25.6%97,597Form 4 · filed 5 days after the trade
2026-01-15Bellon ChristineofficerSale2,111 @ $33.62$71K−1.8% of holding−12.9%−25.6%113,556Form 4 · filed 5 days after the trade
2026-01-15Bellon ChristineofficerSale559 @ $35.40$20K−0.6% of holding−12.9%−25.6%97,038Form 4 · filed 5 days after the trade
2025-12-31Emany Sravan KumardirectorSale6,294 @ $27.10$171K−7.9% of holding−1.3%+16.7%73,706Form 4 · filed 5 days after the trade
2025-12-31Bellon ChristineofficerSale1,254 @ $27.10$34K−1.1% of holding−1.3%+16.7%115,667Form 4 · filed 5 days after the trade
2025-10-27FMR LLCotherSale459 @ $26.68$12K−97.0% of holding−6.1%+5.5%14Form 4 · filed 2 days after the trade
2025-10-02Evans John M.directorSale25,000 @ $24.63$616K−2.5% of holding−4.2%−4.3%986,667Form 4 · filed 1 day after the trade
2025-10-01Evans John M.directorSale25,000 @ $24.51$613K−2.5% of holding−3.1%+3.5%986,667Form 4 · filed 2 days after the trade
2025-10-01Cavanagh Bethany JofficerSale467 @ $24.53$11K−1.0% of holding−3.1%+3.5%44,045Form 4 · filed 2 days after the trade
2025-10-01Bellon ChristineofficerSale373 @ $24.53$9K−0.3% of holding−3.1%+3.5%116,921Form 4 · filed 2 days after the trade
2025-07-30FMR LLCotherSale48,374 @ $20.50$992K−2.3% of holding−18.7%+35.3%2,073,665Form 4 · filed 2 days after the trade
2025-07-03Simon AmyofficerSale876 @ $20.12$18K−1.3% of holding−5.4%+25.8%64,864Form 4 · filed same day
2025-07-01Simon AmyofficerSale374 @ $16.94$6K−0.6% of holding+10.1%+46.8%65,740Form 4 · filed 2 days after the trade
2025-04-02Simon AmyofficerSale20,997 @ $17.73$372K−24.2% of holding+9.1%+19.2%65,742Form 4 · filed 1 day after the trade
2025-04-01Evans John M.directorSale30,663 @ $18.35$563K−3.0% of holding+12.9%+16.9%986,249Form 4 · filed 2 days after the trade
2025-04-01Simon AmyofficerSale9,566 @ $18.35$176K−9.9% of holding+12.9%+16.9%86,739Form 4 · filed 2 days after the trade
2025-04-01Ciaramella GiuseppeofficerSale7,434 @ $18.35$136K−3.8% of holding+12.9%+16.9%190,216Form 4 · filed 2 days after the trade
2025-04-01Bellon ChristineofficerSale5,674 @ $18.35$104K−4.6% of holding+12.9%+16.9%117,294Form 4 · filed 2 days after the trade
2025-04-01Cavanagh Bethany JofficerSale3,015 @ $18.35$55K−6.3% of holding+12.9%+16.9%44,512Form 4 · filed 2 days after the trade
2025-02-18Cavanagh Bethany JofficerSale6,287 @ $35.00$220K−14.3% of holding−22.2%−56.4%37,527Form 4 · filed 2 days after the trade
2025-02-14Bellon ChristineofficerSale10,000 @ $34.00$340K−8.9% of holding−22.3%−53.4%102,968Form 4 · filed 5 days after the trade
2025-01-30Evans John M.directorSale29,800 @ $26.75$797K−3.2% of holding−4.5%−34.3%908,859Form 4 · filed 4 days after the trade
2025-01-30Evans John M.directorSale200 @ $27.28$5K−0.0% of holding−4.5%−34.3%908,659Form 4 · filed 4 days after the trade
2025-01-02Bellon ChristineofficerSale1,241 @ $24.68$31K−1.2% of holding+1.3%−24.6%102,968Form 4 · filed 4 days after the trade
2025-01-02Cavanagh Bethany JofficerSale1,117 @ $24.68$28K−2.5% of holding+1.3%−24.6%43,814Form 4 · filed 4 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.

71 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
2026-06-30Evans John M.directorOption exercise25,0001,072,205Form 4
2026-06-30Evans John M.directorOption exercise25,000205,804Form 4
2026-06-29Evans John M.directorOption exercise18,6631,065,868Form 4
2026-06-29Evans John M.directorOption exercise6,3371,072,205Form 4
2026-06-29Evans John M.directorOption exercise6,337230,804Form 4
2026-06-29Evans John M.directorOption exercise18,6639Form 4
2026-06-17Ciaramella GiuseppeofficerOption exercise29,000253,911Form 4
2026-06-17Ciaramella GiuseppeofficerOption exercise6,505224,911Form 4
2026-06-17Ciaramella GiuseppeofficerOption exercise6,5050Form 4
2026-06-17Ciaramella GiuseppeofficerOption exercise29,00056,946Form 4
2026-06-03Walsh Kathleen EdirectorAward / grant19,67619,676Form 4
2026-06-03COOPER GRAHAM KdirectorAward / grant19,67619,676Form 4
2026-06-03MARAGANORE JOHNdirectorAward / grant19,67619,676Form 4
2026-06-03Shaw ChristidirectorAward / grant19,67619,676Form 4
2026-06-03Guindo ChirfidirectorAward / grant19,67619,676Form 4
2026-06-03Fishman MarkdirectorAward / grant19,67619,676Form 4
2026-03-31Evans John M.directorOption exercise25,0001,011,667Form 4
2026-03-31Cavanagh Bethany JofficerAward / grant20,00054,813Form 4
2026-03-31Evans John M.directorAward / grant90,0001,076,667Form 4
2026-03-31Evans John M.directorOption exercise25,00018,672Form 4
2026-03-31Simon AmyofficerAward / grant31,750109,114Form 4
2026-03-31Bellon ChristineofficerAward / grant20,000115,667Form 4
2026-03-31Ciaramella GiuseppeofficerAward / grant40,000230,216Form 4
2026-03-31Emany Sravan KumardirectorAward / grant31,750105,456Form 4
2026-03-30Evans John M.directorOption exercise25,0001,011,667Form 4
2026-03-30Evans John M.directorOption exercise25,00043,672Form 4
2026-02-24Ciaramella GiuseppeofficerOption exercise35,000225,216Form 4
2026-02-24Ciaramella GiuseppeofficerOption exercise35,000397,313Form 4
2026-01-31Emany Sravan KumardirectorAward / grant63,50063,500Form 4
2026-01-31Simon AmyofficerAward / grant88,50088,500Form 4
2026-01-31Bellon ChristineofficerAward / grant40,00040,000Form 4
2026-01-31Cavanagh Bethany JofficerAward / grant40,00040,000Form 4
2026-01-31Evans John M.directorAward / grant180,000180,000Form 4
2026-01-31Ciaramella GiuseppeofficerAward / grant80,00080,000Form 4
2026-01-30Evans John M.directorOption exercise25,0001,011,667Form 4
2026-01-30Evans John M.directorOption exercise25,00068,672Form 4
2026-01-29Evans John M.directorOption exercise19,3361,006,003Form 4
2026-01-29Evans John M.directorOption exercise5,6641,011,667Form 4
2026-01-29Evans John M.directorOption exercise19,3360Form 4
2026-01-29Evans John M.directorOption exercise5,66493,672Form 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.