UPBUpstream Bio, Inc.Healthcare · Biotechnologyas of 2026-09-25
Horizon

Issued 2026-09-25 at $5.36 · now $5.36 (2026-09-25, +0.0% since)

Based on its own history, a month from the 2026-09-25 close, UPB has typically landed between $3.43 and $7.27 — a range of −36.1% to +35.7% from the issuance price $5.36.

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

469 overlapping 1 month windows · 2024-10-11 – 2026-08-26 · basis climatology · forecast (batch). Base rate up 53.7% (90% CI 51.5–55.9%, ≈1,391 obs). Not a call on this stock — we have no evidence its odds differ.

The cone is anchored at the 2026-09-25 issuance close ($5.36) — the price the forecast resolves against on 2026-10-26, 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 UPB has typically landed a month from the 2026-09-25 close of $5.36 — the range is history, not a prediction.

$3.43worst · -36.1%$7.27best · +35.7%
  • now $5.36 (+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). $5.44 (+1.5%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $4.48–$6.4
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $3.43–$7.27
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 469 windows spanning 2024-10-11 to 2026-09-25. 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
2026-01-30−76.3%−76.3%+0.0%
2026-01-27−75.7%−76.2%+0.0%
2026-01-29−75.1%−75.2%+0.5%
3 best
2025-07-17+71.5%−3.6%+71.5%
2025-07-16+70.5%−2.6%+70.5%
2025-07-18+68.1%−0.7%+76.6%

469 overlapping windows · 2024-10-11 – 2026-09-25 · not cherry-picked

Pending catalysts

  • September 2027 — Trial primary completion: Phase 2 primary completion: A Long-Term Safety and Efficacy Study of Verekitug (UPB-101) in Adult Participants With Severe Asthma (VALOUR) (source, as of 2026-08-14)
  • October 2027 — Trial primary completion: Phase 2 primary completion: A Study to Assess the Efficacy and Safety of Verekitug in Participants With COPD (source, as of 2026-08-14)

Public, scheduled events — dated attention, not a prediction of the outcome. See the FDA catalysts page for the historical base rate.

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 ~2 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%
−10.0%
n=2
Feb
0%
−50.8%
n=2
Mar
50%
−2.8%
n=2
Apr
100%
+26.7%
n=2
May
0%
−4.6%
n=2
Jun
50%
+0.9%
n=2
Jul
50%
+15.3%
n=2
Aug
100%
+8.4%
n=2
Sep
50%
−4.6%
n=2
Oct
100%
+37.4%
n=1
Nov
50%
−0.6%
n=2
Dec
0%
−14.9%
n=2

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$33$52026-09-16: 5 insider sales, $28K — Sutherland Everett Rand, Deykin Aaron, GRAY MICHAEL, Houghton Adam …2026-06-16: 5 insider sales, $31K — Sutherland Everett Rand, Deykin Aaron, GRAY MICHAEL, Houghton Adam …2026-03-16: 5 insider sales, $47K — Sutherland Everett Rand, Deykin Aaron, GRAY MICHAEL, Houghton Adam …2026-03: 5 open-market sales, $47K2026-06: 5 open-market sales, $31K2026-09: 5 open-market sales, $28K↑ buys↓ salesdirector Sutherland Everett Rand — Sale on 2026-09-16, filed 1 day after the tradeofficer Deykin Aaron — Sale on 2026-09-16, filed 1 day after the tradeofficer GRAY MICHAEL — Sale on 2026-09-16, filed 1 day after the tradeofficer Houghton Adam — Sale on 2026-09-16, filed 1 day after the tradeofficer Ambrose Allison — Sale on 2026-09-16, filed 1 day after the tradedirector Sutherland Everett Rand — Sale on 2026-06-16, filed 1 day after the tradeofficer Deykin Aaron — Sale on 2026-06-16, filed 1 day after the tradeofficer GRAY MICHAEL — Sale on 2026-06-16, filed 1 day after the tradeofficer Houghton Adam — Sale on 2026-06-16, filed 1 day after the tradeofficer Ambrose Allison — Sale on 2026-06-16, filed 1 day after the tradedirector Sutherland Everett Rand — Sale on 2026-03-16, filed 1 day after the tradeofficer Deykin Aaron — Sale on 2026-03-16, filed 1 day after the tradeofficer GRAY MICHAEL — Sale on 2026-03-16, filed 1 day after the tradeofficer Houghton Adam — Sale on 2026-03-16, filed 1 day after the tradeofficer Ambrose Allison — Sale on 2026-03-16, filed 1 day after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-09-16Sutherland Everett RanddirectorSale2,095 @ $5.49$12K−3.0% of holdingnot yet — horizon still opennot yet — horizon still open68,717Form 4 · filed 1 day after the trade
2026-09-16Deykin AaronofficerSale895 @ $5.49$5K−2.7% of holdingnot yet — horizon still opennot yet — horizon still open32,302Form 4 · filed 1 day after the trade
2026-09-16GRAY MICHAELofficerSale853 @ $5.49$5K−3.0% of holdingnot yet — horizon still opennot yet — horizon still open27,942Form 4 · filed 1 day after the trade
2026-09-16Houghton AdamofficerSale700 @ $5.49$4K−3.0% of holdingnot yet — horizon still opennot yet — horizon still open22,901Form 4 · filed 1 day after the trade
2026-09-16Ambrose AllisonofficerSale485 @ $5.49$3K−3.0% of holdingnot yet — horizon still opennot yet — horizon still open15,563Form 4 · filed 1 day after the trade
2026-06-16Sutherland Everett RanddirectorSale2,095 @ $6.10$13K−2.9% of holding+19.1%not yet — horizon still open70,812Form 4 · filed 1 day after the trade
2026-06-16Deykin AaronofficerSale895 @ $6.10$5K−2.6% of holding+19.1%not yet — horizon still open33,197Form 4 · filed 1 day after the trade
2026-06-16GRAY MICHAELofficerSale853 @ $6.10$5K−2.9% of holding+19.1%not yet — horizon still open28,795Form 4 · filed 1 day after the trade
2026-06-16Houghton AdamofficerSale700 @ $6.10$4K−2.9% of holding+19.1%not yet — horizon still open23,601Form 4 · filed 1 day after the trade
2026-06-16Ambrose AllisonofficerSale477 @ $6.10$3K−2.9% of holding+19.1%not yet — horizon still open16,048Form 4 · filed 1 day after the trade
2026-03-16Sutherland Everett RanddirectorSale2,093 @ $9.29$19K−2.8% of holding−2.1%−56.5%72,907Form 4 · filed 1 day after the trade
2026-03-16Deykin AaronofficerSale894 @ $9.29$8K−2.7% of holding−2.1%−56.5%32,687Form 4 · filed 1 day after the trade
2026-03-16GRAY MICHAELofficerSale852 @ $9.29$8K−2.8% of holding−2.1%−56.5%29,648Form 4 · filed 1 day after the trade
2026-03-16Houghton AdamofficerSale699 @ $9.29$6K−2.8% of holding−2.1%−56.5%24,301Form 4 · filed 1 day after the trade
2026-03-16Ambrose AllisonofficerSale475 @ $9.29$4K−2.8% of holding−2.1%−56.5%16,525Form 4 · filed 1 day after the trade
2024-10-15AI Upstream LLCtenPercentOwnerPurchase1,175,000 @ $17.00$20.0Mownership Δ n/a+9.6%−53.2%1,175,000Form 4 · filed 2 days after the trade
2024-10-15ORBIMED ADVISORS LLCdirectorPurchase660,000 @ $17.00$11.2M+16.9% of holding+9.6%−53.2%4,554,873Form 4 · filed 2 days after the trade
2024-10-15Chimovits ErezdirectorPurchase660,000 @ $17.00$11.2M+16.9% of holding+9.6%−53.2%4,554,873Form 4 · filed 2 days after the trade
2024-10-15ORBIMED ADVISORS LLCdirectorPurchase165,000 @ $17.00$2.8M+16.9% of holding+9.6%−53.2%1,138,716Form 4 · filed 2 days after the trade
2024-10-15Chimovits ErezdirectorPurchase165,000 @ $17.00$2.8M+16.9% of holding+9.6%−53.2%1,138,716Form 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.

103 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
2026-06-09Ruddy Marcella K.directorAward / grant17,09617,096Form 4
2026-06-09Chimovits ErezdirectorAward / grant17,09617,096Form 4
2026-06-09Fleming Harold EdwarddirectorAward / grant17,09617,096Form 4
2026-06-09Ratcliffe LiamdirectorAward / grant17,09617,096Form 4
2026-06-09Renaud Ronald C JRdirectorAward / grant17,09617,096Form 4
2026-06-09Beckman DanielladirectorAward / grant17,09617,096Form 4
2026-01-02Ambrose AllisonofficerAward / grant17,00017,000Form 4
2026-01-02Deykin AaronofficerAward / grant32,00033,581Form 4
2026-01-02Deykin AaronofficerAward / grant96,00096,000Form 4
2026-01-02Ambrose AllisonofficerAward / grant51,00051,000Form 4
2026-01-02Sutherland Everett RanddirectorAward / grant75,00075,000Form 4
2026-01-02Sutherland Everett RanddirectorAward / grant225,000225,000Form 4
2026-01-02GRAY MICHAELofficerAward / grant30,50030,500Form 4
2026-01-02GRAY MICHAELofficerAward / grant91,50091,500Form 4
2026-01-02Houghton AdamofficerAward / grant25,00025,000Form 4
2026-01-02Houghton AdamofficerAward / grant75,00075,000Form 4
2025-06-10Ruddy Marcella K.directorAward / grant17,09617,096Form 4
2025-06-10Renaud Ronald C JRdirectorAward / grant17,09617,096Form 4
2025-06-10Ratcliffe LiamdirectorAward / grant17,09617,096Form 4
2025-06-10Chimovits ErezdirectorAward / grant17,09617,096Form 4
2025-06-10Beckman DanielladirectorAward / grant17,09617,096Form 4
2025-06-10Fleming Harold EdwarddirectorAward / grant17,09617,096Form 4
2025-02-06Ambrose AllisonofficerAward / grant25,00025,000Form 4
2025-02-06Deykin AaronofficerAward / grant165,000165,000Form 4
2025-02-06Sutherland Everett RanddirectorAward / grant500,000500,000Form 4
2025-02-06GRAY MICHAELofficerAward / grant195,000195,000Form 4
2025-02-06Houghton AdamofficerAward / grant140,000140,000Form 4
2024-12-16Ambrose AllisonofficerAward / grant100,000100,000Form 4
2024-10-15Wellington Biomedical Innovation Master Investors (Cayman) II L.P.tenPercentOwnerConversion852,9400Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion789,8330Form 4
2024-10-15Wellington Biomedical Innovation Master Investors (Cayman) II L.P.tenPercentOwnerConversion894,733894,733Form 4
2024-10-15Wellington Biomedical Innovation Master Investors (Cayman) II L.P.tenPercentOwnerConversion894,733894,733Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion789,8330Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion721,956973,716Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion2,887,8333,894,873Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion524,5000Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion2,098,0000Form 4
2024-10-15ORBIMED ADVISORS LLCdirectorConversion197,4560Form 4
2024-10-15AI Upstream LLCtenPercentOwnerConversion3,147,0004,322,000Form 4
2024-10-15AI Upstream LLCtenPercentOwnerConversion1,172,4105,494,410Form 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.