RPIDRapid Micro Biosystems, Inc.Healthcare · Medical - Devicesas of 2026-09-16
Horizon

Issued 2026-09-16 at $1.11 · now $1.11 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, RPID has typically landed between $0.72 and $1.58 — a range of −35.6% to +41.9% from the issuance price $1.11.

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

1,278 overlapping 1 month windows · 2021-07-15 – 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 ($1.11) — 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 RPID has typically landed a month from the 2026-09-16 close of $1.11 — the range is history, not a prediction.

$0.7153worst · -35.6%$1.58best · +41.9%
  • now $1.11 (+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). $1.04 (-6.3%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $0.8803–$1.2
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $0.7153–$1.58
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 1,278 windows spanning 2021-07-15 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
2021-11-04−55.1%−55.1%+0.3%
2021-11-10−54.8%−54.8%+2.8%
2021-11-09−53.4%−53.6%+0.1%
3 best
2025-01-14+227.5%+0.0%+227.5%
2025-01-16+225.0%+0.0%+225.0%
2025-01-17+202.4%+0.0%+217.1%

1,278 overlapping windows · 2021-07-15 – 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 ~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
80%
+36.1%
n=5
Feb
40%
+10.5%
n=5
Mar
20%
−10.7%
n=5
Apr
40%
−8.6%
n=5
May
40%
+0.0%
n=5
Jun
20%
−9.4%
n=5
Jul
60%
+4.8%
n=5
Aug
17%
−11.9%
n=6
Sep
50%
+3.8%
n=6
Oct
40%
+1.4%
n=5
Nov
40%
−3.7%
n=5
Dec
0%
−28.1%
n=5

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$5$12026-05-20: 15 insider purchases, $0 — Bain Capital Life Sciences Investors, LLC …2026-03-11: 2 insider sales, $74K — Wilson John J. Addington, WIRTJES SEAN M2026-03-10: 1 insider sale, $74K — Spignesi Robert G. Jr.2026-02-20: 2 insider sales, $89K — WIRTJES SEAN M, Wilson John J. Addington2026-02-19: 1 insider sale, $149K — Spignesi Robert G. Jr.2026-02-09: 3 insider sales, $89K — Spignesi Robert G. Jr., WIRTJES SEAN M, Wilson John J. Addington2026-02-04: 1 insider sale, $190K — Longitude Capital Partners II, LLC2026-02-03: 1 insider sale, $117K — Longitude Capital Partners II, LLC2026-02-02: 1 insider sale, $117K — Longitude Capital Partners II, LLC2026-01-30: 1 insider sale, $209K — Longitude Capital Partners II, LLC2026-01-23: 1 insider sale, $31K — Longitude Capital Partners II, LLC2026-01: 2 open-market sales, $240K2026-02: 9 open-market sales, $750K2026-03: 3 open-market sales, $147K↑ buys↓ salestenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradetenPercentOwner Bain Capital Life Sciences Investors, LLC — Purchase on 2026-05-20, filed 2 days after the tradeofficer Wilson John J. Addington — Sale on 2026-03-11, filed 1 day after the tradeofficer WIRTJES SEAN M — Sale on 2026-03-11, filed 1 day after the tradedirector Spignesi Robert G. Jr. — Sale on 2026-03-10, filed 2 days after the tradeofficer WIRTJES SEAN M — Sale on 2026-02-20, filed same dayofficer Wilson John J. Addington — Sale on 2026-02-20, filed same daydirector Spignesi Robert G. Jr. — Sale on 2026-02-19, filed 1 day after the tradedirector Spignesi Robert G. Jr. — Sale on 2026-02-09, filed 1 day after the tradeofficer WIRTJES SEAN M — Sale on 2026-02-09, filed 1 day after the tradeofficer Wilson John J. Addington — Sale on 2026-02-09, filed 1 day after the tradetenPercentOwner Longitude Capital Partners II, LLC — Sale on 2026-02-04, filed 2 days after the tradetenPercentOwner Longitude Capital Partners II, LLC — Sale on 2026-02-03, filed same daytenPercentOwner Longitude Capital Partners II, LLC — Sale on 2026-02-02, filed 1 day after the tradetenPercentOwner Longitude Capital Partners II, LLC — Sale on 2026-01-30, filed 4 days after the tradetenPercentOwner Longitude Capital Partners II, LLC — Sale on 2026-01-23, filed 11 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-05-20Bain Capital Life Sciences Investors, LLCtenPercentOwnerPurchase1,463,000—ownership Δ n/a−16.1%not yet — horizon still open1,463,000Form 4 · filed 2 days after the trade
2026-03-11Wilson John J. AddingtonofficerSale9,603 @ $4.32$41K−2.9% of holding−52.3%−85.2%316,762Form 4 · filed 1 day after the trade
2026-03-11WIRTJES SEAN MofficerSale7,480 @ $4.32$32K−1.3% of holding−52.3%−85.2%556,194Form 4 · filed 1 day after the trade
2026-03-10Spignesi Robert G. Jr.directorSale17,922 @ $4.11$74K−1.5% of holding−49.3%−83.9%1,169,848Form 4 · filed 2 days after the trade
2026-02-20WIRTJES SEAN MofficerSale17,254 @ $3.92$68K−3.0% of holding−36.2%−68.5%563,674Form 4 · filed same day
2026-02-20Wilson John J. AddingtonofficerSale5,403 @ $3.92$21K−1.6% of holding−36.2%−68.5%326,365Form 4 · filed same day
2026-02-19Spignesi Robert G. Jr.directorSale38,327 @ $3.89$149K−3.1% of holding−35.8%−69.9%1,187,770Form 4 · filed 1 day after the trade
2026-02-09Spignesi Robert G. Jr.directorSale12,840 @ $3.78$49K−1.3% of holding+19.3%−66.6%962,097Form 4 · filed 1 day after the trade
2026-02-09WIRTJES SEAN MofficerSale6,027 @ $3.78$23K−1.2% of holding+19.3%−66.6%483,928Form 4 · filed 1 day after the trade
2026-02-09Wilson John J. AddingtonofficerSale4,610 @ $3.78$17K−1.8% of holding+19.3%−66.6%257,768Form 4 · filed 1 day after the trade
2026-02-04Longitude Capital Partners II, LLCtenPercentOwnerSale49,000 @ $3.88$190K−100.0% of holding+7.9%−59.1%0Form 4 · filed 2 days after the trade
2026-02-03Longitude Capital Partners II, LLCtenPercentOwnerSale27,500 @ $4.24$117K−35.9% of holding−2.9%−63.7%49,000Form 4 · filed same day
2026-02-02Longitude Capital Partners II, LLCtenPercentOwnerSale27,500 @ $4.25$117K−26.4% of holding+5.5%−62.3%76,500Form 4 · filed 1 day after the trade
2026-01-30Longitude Capital Partners II, LLCtenPercentOwnerSale46,000 @ $4.54$209K−30.7% of holding−2.6%−62.2%104,000Form 4 · filed 4 days after the trade
2026-01-23Longitude Capital Partners II, LLCtenPercentOwnerSale7,739 @ $4.06$31K−0.2% of holding+0.5%−59.0%4,029,245Form 4 · filed 11 days after the trade
2025-07-14Spignesi Robert G. Jr.directorSale11,881 @ $3.32$39K−1.2% of holding−19.1%−16.0%970,550Form 4 · filed 1 day after the trade
2025-07-11Spignesi Robert G. Jr.directorSale11,874 @ $3.33$39K−1.2% of holding−4.9%−18.8%957,286Form 4 · filed 4 days after the trade
2025-07-10Spignesi Robert G. Jr.directorSale11,617 @ $3.40$39K−1.2% of holding−0.9%−14.4%944,015Form 4 · filed same day
2025-07-09Spignesi Robert G. Jr.directorSale11,247 @ $3.51$39K−1.2% of holding−4.8%−14.9%900,583Form 4 · filed 1 day after the trade
2025-07-08Spignesi Robert G. Jr.directorSale10,824 @ $3.51$38K−1.2% of holding−4.6%−15.6%886,686Form 4 · filed 2 days after the trade
2024-12-05PEI MELINDA LITHERLANDdirectorPurchase9,120 @ $1.04$9K+20.2% of holding+3.6%+248.5%54,300Form 4 · filed same day
2024-12-03PEI MELINDA LITHERLANDdirectorPurchase10,880 @ $1.00$11K+31.7% of holding+0.7%+253.0%45,180Form 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.

75 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
2026-07-24Kollender Richard SdirectorOption exercise1,827133,826Form 4
2026-07-24Kollender Richard SdirectorOption exercise1,681131,999Form 4
2026-07-24Kollender Richard SdirectorOption exercise1,6810Form 4
2026-07-24Kollender Richard SdirectorOption exercise1,8270Form 4
2026-07-22Spignesi Robert G. Jr.directorOption exercise1,4021,191,973Form 4
2026-07-22Spignesi Robert G. Jr.directorOption exercise1,4020Form 4
2026-05-29LOWENSTEIN INESEdirectorAward / grant12,78770,687Form 4
2026-05-29Malloy KirkdirectorAward / grant12,78760,687Form 4
2026-05-29Spignesi Robert G. Jr.directorAward / grant12,7871,190,571Form 4
2026-05-29PEI MELINDA LITHERLANDdirectorAward / grant12,787100,687Form 4
2026-05-29WIRTJES SEAN MofficerAward / grant12,787568,981Form 4
2026-05-29WIRTJES SEAN MofficerAward / grant12,78712,787Form 4
2026-05-29LOWENSTEIN INESEdirectorAward / grant12,78712,787Form 4
2026-05-29Malloy KirkdirectorAward / grant12,78712,787Form 4
2026-05-29PEI MELINDA LITHERLANDdirectorAward / grant12,78712,787Form 4
2026-05-29Spignesi Robert G. Jr.directorAward / grant12,78712,787Form 4
2026-05-21Bika DafnidirectorAward / grant19,30019,300Form 4
2026-05-21Bika DafnidirectorAward / grant38,70038,700Form 4
2026-05-21Kollender Richard SdirectorAward / grant19,300130,318Form 4
2026-05-21Kollender Richard SdirectorAward / grant38,70038,700Form 4
2026-05-21LOWENSTEIN INESEdirectorAward / grant19,30057,900Form 4
2026-05-21LOWENSTEIN INESEdirectorAward / grant38,70038,700Form 4
2026-05-21Malloy KirkdirectorAward / grant19,30047,900Form 4
2026-05-21Malloy KirkdirectorAward / grant38,70038,700Form 4
2026-05-21PEI MELINDA LITHERLANDdirectorAward / grant19,30087,900Form 4
2026-05-21PEI MELINDA LITHERLANDdirectorAward / grant38,70038,700Form 4
2026-02-27RICCIARDI NATALE SdirectorOption exercise8420Form 4
2026-02-27RICCIARDI NATALE SdirectorOption exercise84229,442Form 4
2026-02-11Spignesi Robert G. Jr.directorAward / grant264,0001,226,097Form 4
2026-02-11Spignesi Robert G. Jr.directorAward / grant528,000528,000Form 4
2026-02-11WIRTJES SEAN MofficerAward / grant97,000580,928Form 4
2026-02-11WIRTJES SEAN MofficerAward / grant193,000193,000Form 4
2026-02-11Wilson John J. AddingtonofficerAward / grant74,000331,768Form 4
2026-02-11Wilson John J. AddingtonofficerAward / grant147,000147,000Form 4
2026-01-23Longitude Capital Partners II, LLCtenPercentOwnerExercise629,0324,036,984Form 4
2026-01-23Longitude Capital Partners II, LLCtenPercentOwnerExercise500,0000Form 4
2026-01-23Longitude Capital Partners II, LLCtenPercentOwnerExercise129,0320Form 4
2025-11-14Malloy KirkdirectorGift40,00028,600Form 4
2025-10-17Spignesi Robert G. Jr.directorWithheld for tax4,774974,937Form 4
2025-10-17Spignesi Robert G. Jr.directorWithheld for tax2,072971,878Form 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.