Issued 2026-09-16 at $36.11 · now $36.11 (2026-09-16, +0.0% since)
Based on its own history, a month from the 2026-09-16 close, BLFS has typically landed between $27.99 and $46.27 — a range of −22.5% to +28.1% from the issuance price $36.11.
- Actual close
- Typical path (median)
- Middle 50% of outcomes
- 90% range
4,981 overlapping 1 month windows · 2006-09-26 – 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 ($36.11) — 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 BLFS has typically landed a month from the 2026-09-16 close of $36.11 — the range is history, not a prediction.
- now $36.11 (+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). $36.18 (+0.2%)
- middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $32.46–$39.91
- 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $27.99–$46.27
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 4,981 windows spanning 2006-09-26 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 | |||
| 2011-10-31 | −66.7% | −66.7% | +0.0% |
| 2009-02-09 | −61.5% | −61.5% | +0.0% |
| 2009-02-12 | −61.5% | −61.5% | +0.0% |
| 3 best | |||
| 2009-01-07 | +333.3% | +0.0% | +333.3% |
| 2008-12-31 | +233.3% | +0.0% | +233.3% |
| 2008-12-29 | +233.3% | +0.0% | +233.3% |
4,981 overlapping windows · 2006-09-26 – 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 ~20 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%
+13.8%
n=20
Feb
55%
+5.7%
n=20
Mar
35%
−7.0%
n=20
Apr
40%
+2.5%
n=20
May
55%
+6.5%
n=20
Jun
55%
+8.5%
n=20
Jul
70%
+14.9%
n=20
Aug
55%
+7.2%
n=20
Sep
50%
+2.0%
n=20
Oct
55%
+10.4%
n=20
Nov
25%
−6.4%
n=20
Dec
35%
−4.3%
n=20
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-03-23 | Foster Karen A. | officer | Sale | 2,577 @ $19.17 | $49K | −2.3% of holding | +10.4% | not yet — horizon still open | 108,758 | Form 4 · filed 8 days after the trade |
| 2026-03-09 | Foster Karen A. | officer | Sale | 500 @ $20.00 | $10K | −0.4% of holding | −0.9% | +64.3% | 113,242 | Form 4 · filed same day |
| 2026-03-05 | Foster Karen A. | officer | Sale | 96,923 @ $20.15 | $2.0M | −46.0% of holding | −1.2% | +62.5% | 113,742 | Form 4 · filed 4 days after the trade |
| 2026-03-03 | Wichterman Troy | officer | Sale | 588 @ $20.74 | $12K | −0.3% of holding | −0.9% | +63.3% | 220,649 | Form 4 · filed 2 days after the trade |
| 2026-03-03 | Mathew Aby J. | officer | Sale | 529 @ $20.74 | $11K | −0.1% of holding | −0.9% | +63.3% | 392,937 | Form 4 · filed 2 days after the trade |
| 2026-03-03 | Foster Karen A. | officer | Sale | 418 @ $20.74 | $9K | −0.2% of holding | −0.9% | +63.3% | 210,665 | Form 4 · filed 2 days after the trade |
| 2026-03-03 | Berard Todd | officer | Sale | 353 @ $20.74 | $7K | −0.2% of holding | −0.9% | +63.3% | 165,940 | Form 4 · filed 2 days after the trade |
| 2026-03-03 | Aebersold Sarah | officer | Sale | 219 @ $20.74 | $5K | −0.2% of holding | −0.9% | +63.3% | 93,360 | Form 4 · filed 2 days after the trade |
| 2026-03-03 | Werner Sean | officer | Sale | 111 @ $20.74 | $2K | −0.2% of holding | −0.9% | +63.3% | 49,932 | Form 4 · filed 2 days after the trade |
| 2026-01-06 | Wichterman Troy | officer | Sale | 990 @ $25.59 | $25K | −0.7% of holding | −14.4% | −2.1% | 150,746 | Form 4 · filed 2 days after the trade |
| 2026-01-06 | Mathew Aby J. | officer | Sale | 405 @ $25.59 | $10K | −0.1% of holding | −14.4% | −2.1% | 349,350 | Form 4 · filed 2 days after the trade |
| 2026-01-06 | Berard Todd | officer | Sale | 344 @ $25.59 | $9K | −0.3% of holding | −14.4% | −2.1% | 132,564 | Form 4 · filed 2 days after the trade |
| 2026-01-06 | Foster Karen A. | officer | Sale | 335 @ $25.59 | $9K | −0.2% of holding | −14.4% | −2.1% | 191,984 | Form 4 · filed 2 days after the trade |
| 2026-01-06 | Aebersold Sarah | officer | Sale | 241 @ $25.59 | $6K | −0.3% of holding | −14.4% | −2.1% | 75,765 | Form 4 · filed 2 days after the trade |
| 2025-12-15 | DuRoss Amy | director | Sale | 2,000 @ $24.60 | $49K | −9.7% of holding | −2.7% | −5.7% | 18,687 | Form 4 · filed 2 days after the trade |
| 2025-12-15 | Aebersold Sarah | officer | Sale | 713 @ $24.46 | $17K | −0.9% of holding | −2.7% | −5.7% | 76,006 | Form 4 · filed 2 days after the trade |
| 2025-12-09 | Wichterman Troy | officer | Sale | 1,033 @ $25.13 | $26K | −0.7% of holding | −1.5% | −1.1% | 151,736 | Form 4 · filed 8 days after the trade |
| 2025-12-09 | Mathew Aby J. | officer | Sale | 631 @ $25.13 | $16K | −0.2% of holding | −1.5% | −1.1% | 349,755 | Form 4 · filed 8 days after the trade |
| 2025-12-09 | Foster Karen A. | officer | Sale | 519 @ $25.13 | $13K | −0.3% of holding | −1.5% | −1.1% | 192,319 | Form 4 · filed 8 days after the trade |
| 2025-12-09 | Berard Todd | officer | Sale | 358 @ $25.13 | $9K | −0.3% of holding | −1.5% | −1.1% | 132,908 | Form 4 · filed 8 days after the trade |
| 2025-12-09 | Aebersold Sarah | officer | Sale | 233 @ $25.13 | $6K | −0.3% of holding | −1.5% | −1.1% | 76,719 | Form 4 · filed 8 days after the trade |
| 2025-12-04 | Wichterman Troy | officer | Sale | 30,000 @ $25.72 | $772K | −16.4% of holding | +0.6% | −7.6% | 152,769 | Form 4 · filed 1 day after the trade |
| 2025-11-26 | DuRoss Amy | director | Sale | 2,000 @ $27.00 | $54K | −8.8% of holding | −7.3% | −12.4% | 20,687 | Form 4 · filed 2 days after the trade |
| 2025-11-25 | DuRoss Amy | director | Sale | 2,000 @ $27.00 | $54K | −8.1% of holding | −10.3% | −20.4% | 22,687 | Form 4 · filed 3 days after the trade |
| 2025-11-25 | Wichterman Troy | officer | Sale | 584 @ $26.74 | $16K | −0.3% of holding | −10.3% | −20.4% | 182,769 | Form 4 · filed 3 days after the trade |
| 2025-11-25 | Mathew Aby J. | officer | Sale | 526 @ $26.74 | $14K | −0.1% of holding | −10.3% | −20.4% | 350,386 | Form 4 · filed 3 days after the trade |
| 2025-11-25 | Foster Karen A. | officer | Sale | 415 @ $26.74 | $11K | −0.2% of holding | −10.3% | −20.4% | 192,838 | Form 4 · filed 3 days after the trade |
| 2025-11-25 | Berard Todd | officer | Sale | 351 @ $26.74 | $9K | −0.3% of holding | −10.3% | −20.4% | 133,266 | Form 4 · filed 3 days after the trade |
| 2025-11-25 | Aebersold Sarah | officer | Sale | 217 @ $26.74 | $6K | −0.3% of holding | −10.3% | −20.4% | 76,952 | Form 4 · filed 3 days after the trade |
| 2025-11-25 | Werner Sean | officer | Sale | 110 @ $26.74 | $3K | −0.4% of holding | −10.3% | −20.4% | 25,927 | Form 4 · filed 3 days after the trade |
| 2025-11-21 | DuRoss Amy | director | Sale | 1,000 @ $26.00 | $26K | −3.9% of holding | −8.7% | −22.2% | 24,687 | Form 4 · filed same day |
| 2025-11-20 | DuRoss Amy | director | Sale | 4,523 @ $24.51 | $111K | −15.0% of holding | −0.0% | −16.4% | 25,687 | Form 4 · filed 1 day after the trade |
| 2025-11-19 | DuRoss Amy | director | Sale | 477 @ $24.50 | $12K | −1.6% of holding | −0.2% | −14.9% | 30,210 | Form 4 · filed 2 days after the trade |
| 2025-11-13 | DE GREEF RODERICK | director | Sale | 31,165 @ $25.33 | $789K | −7.4% of holding | −3.2% | −21.8% | 389,998 | Form 4 · filed same day |
| 2025-11-12 | DE GREEF RODERICK | director | Sale | 33,418 @ $25.88 | $865K | −7.4% of holding | −5.7% | −28.7% | 421,163 | Form 4 · filed 1 day after the trade |
| 2025-11-11 | DE GREEF RODERICK | director | Sale | 35,417 @ $26.15 | $926K | −7.2% of holding | −5.4% | −29.3% | 454,581 | Form 4 · filed 2 days after the trade |
| 2025-10-24 | GOSWAMI JOYDEEP | director | Sale | 1,666 @ $28.99 | $48K | −3.6% of holding | −7.2% | −33.1% | 44,986 | Form 4 · filed 4 days after the trade |
| 2025-10-22 | DE GREEF RODERICK | director | Sale | 37,795 @ $27.30 | $1.0M | −7.2% of holding | −9.8% | −29.9% | 489,998 | Form 4 · filed 2 days after the trade |
| 2025-10-20 | Werner Sean | officer | Sale | 275 @ $27.82 | $8K | −1.0% of holding | −12.1% | −24.7% | 26,037 | Form 4 · filed 2 days after the trade |
| 2025-10-16 | GOSWAMI JOYDEEP | director | Sale | 1,334 | — | −2.8% of holding | −14.9% | −27.9% | 46,652 | Form 4 · filed 4 days after the trade |
| 2025-10-16 | GOSWAMI JOYDEEP | director | Sale | 1,334 | — | −2.8% of holding | −14.9% | −27.9% | 46,652 | Form 4 · filed 4 days after the trade |
| 2025-10-15 | Casdin Partners Master Fund, L.P. | director | Sale | 750,000 @ $28.55 | $21.4M | −11.2% of holding | −13.6% | −32.6% | 5,957,165 | Form 4 · filed 2 days after the trade |
| 2025-10-09 | Wichterman Troy | officer | Sale | 833 @ $27.36 | $23K | −0.5% of holding | −5.5% | −29.5% | 183,353 | Form 4 · filed 5 days after the trade |
| 2025-10-09 | Mathew Aby J. | officer | Sale | 509 @ $27.36 | $14K | −0.1% of holding | −5.5% | −29.5% | 350,912 | Form 4 · filed 5 days after the trade |
| 2025-10-09 | Foster Karen A. | officer | Sale | 419 @ $27.36 | $11K | −0.2% of holding | −5.5% | −29.5% | 193,253 | Form 4 · filed 5 days after the trade |
| 2025-10-09 | Berard Todd | officer | Sale | 289 @ $27.36 | $8K | −0.2% of holding | −5.5% | −29.5% | 133,617 | Form 4 · filed 5 days after the trade |
| 2025-10-09 | Aebersold Sarah | officer | Sale | 188 @ $27.36 | $5K | −0.2% of holding | −5.5% | −29.5% | 77,169 | Form 4 · filed 5 days after the trade |
| 2025-09-15 | Aebersold Sarah | officer | Sale | 714 @ $25.61 | $18K | −0.9% of holding | +6.7% | −26.9% | 77,357 | Form 4 · filed 2 days after the trade |
| 2025-09-11 | Wichterman Troy | officer | Sale | 1,032 @ $26.83 | $28K | −0.6% of holding | +0.6% | −32.6% | 184,186 | Form 4 · filed 4 days after the trade |
| 2025-09-11 | Mathew Aby J. | officer | Sale | 630 @ $26.83 | $17K | −0.2% of holding | +0.6% | −32.6% | 351,421 | Form 4 · filed 4 days after the trade |
| 2025-09-11 | Foster Karen A. | officer | Sale | 511 @ $26.83 | $14K | −0.3% of holding | +0.6% | −32.6% | 193,672 | Form 4 · filed 4 days after the trade |
| 2025-09-11 | Berard Todd | officer | Sale | 358 @ $26.83 | $10K | −0.3% of holding | +0.6% | −32.6% | 133,906 | Form 4 · filed 4 days after the trade |
| 2025-09-11 | Aebersold Sarah | officer | Sale | 233 @ $26.83 | $6K | −0.3% of holding | +0.6% | −32.6% | 78,071 | Form 4 · filed 4 days after the trade |
| 2025-09-11 | Werner Sean | officer | Sale | 72 @ $26.83 | $2K | −0.3% of holding | +0.6% | −32.6% | 26,312 | Form 4 · filed 4 days after the trade |
| 2025-08-26 | Wichterman Troy | officer | Sale | 590 @ $25.44 | $15K | −0.3% of holding | −8.0% | −19.8% | 185,218 | Form 4 · filed 2 days after the trade |
| 2025-08-26 | Mathew Aby J. | officer | Sale | 531 @ $25.44 | $14K | −0.2% of holding | −8.0% | −19.8% | 352,051 | Form 4 · filed 2 days after the trade |
| 2025-08-26 | Foster Karen A. | officer | Sale | 413 @ $25.44 | $11K | −0.2% of holding | −8.0% | −19.8% | 194,183 | Form 4 · filed 2 days after the trade |
| 2025-08-26 | Berard Todd | officer | Sale | 354 @ $25.44 | $9K | −0.3% of holding | −8.0% | −19.8% | 134,264 | Form 4 · filed 2 days after the trade |
| 2025-08-26 | Aebersold Sarah | officer | Sale | 219 @ $25.44 | $6K | −0.3% of holding | −8.0% | −19.8% | 78,304 | Form 4 · filed 2 days after the trade |
| 2025-08-26 | Werner Sean | officer | Sale | 111 @ $25.44 | $3K | −0.4% of holding | −8.0% | −19.8% | 26,384 | Form 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.
111 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 |
|---|---|---|---|---|---|---|
| 2026-09-08 | Wichterman Troy | officer | Withheld for tax | 1,026 | 212,223 | Form 4 |
| 2026-09-08 | Mathew Aby J. | officer | Withheld for tax | 627 | 387,833 | Form 4 |
| 2026-09-08 | Berard Todd | officer | Withheld for tax | 356 | 162,293 | Form 4 |
| 2026-07-17 | Werner Sean | officer | Withheld for tax | 275 | 47,556 | Form 4 |
| 2026-07-07 | Wichterman Troy | officer | Withheld for tax | 844 | 213,249 | Form 4 |
| 2026-07-07 | Mathew Aby J. | officer | Withheld for tax | 516 | 388,460 | Form 4 |
| 2026-07-07 | Berard Todd | officer | Withheld for tax | 293 | 162,649 | Form 4 |
| 2026-06-18 | DE GREEF RODERICK | director | Withheld for tax | 2,775 | 730,971 | Form 4 |
| 2026-06-18 | Wichterman Troy | officer | Withheld for tax | 937 | 214,093 | Form 4 |
| 2026-06-18 | Mathew Aby J. | officer | Withheld for tax | 564 | 388,976 | Form 4 |
| 2026-06-18 | Berard Todd | officer | Withheld for tax | 470 | 162,942 | Form 4 |
| 2026-06-18 | Werner Sean | officer | Withheld for tax | 420 | 47,831 | Form 4 |
| 2026-06-08 | Wichterman Troy | officer | Withheld for tax | 1,026 | 215,030 | Form 4 |
| 2026-06-08 | Mathew Aby J. | officer | Withheld for tax | 627 | 389,540 | Form 4 |
| 2026-06-08 | Berard Todd | officer | Withheld for tax | 356 | 163,412 | Form 4 |
| 2026-04-08 | Wichterman Troy | officer | Withheld for tax | 844 | 216,056 | Form 4 |
| 2026-04-08 | Mathew Aby J. | officer | Withheld for tax | 515 | 390,167 | Form 4 |
| 2026-04-08 | Berard Todd | officer | Withheld for tax | 293 | 163,768 | Form 4 |
| 2026-03-19 | DE GREEF RODERICK | director | Withheld for tax | 11,101 | 733,746 | Form 4 |
| 2026-03-19 | Wichterman Troy | officer | Withheld for tax | 3,749 | 216,900 | Form 4 |
| 2026-03-19 | Mathew Aby J. | officer | Withheld for tax | 2,255 | 390,682 | Form 4 |
| 2026-03-19 | Foster Karen A. | officer | Withheld for tax | 1,907 | 111,335 | Form 4 |
| 2026-03-19 | Berard Todd | officer | Withheld for tax | 1,879 | 164,061 | Form 4 |
| 2026-03-19 | Werner Sean | officer | Withheld for tax | 1,681 | 48,251 | Form 4 |
| 2026-03-19 | Aebersold Sarah | officer | Withheld for tax | 931 | 92,429 | Form 4 |
| 2026-02-24 | DE GREEF RODERICK | director | Withheld for tax | 86,186 | 744,847 | Form 4 |
| 2026-02-24 | DE GREEF RODERICK | director | Withheld for tax | 67,010 | 612,009 | Form 4 |
| 2026-02-24 | Wichterman Troy | officer | Withheld for tax | 25,525 | 221,237 | Form 4 |
| 2026-02-24 | Mathew Aby J. | officer | Withheld for tax | 15,585 | 393,466 | Form 4 |
| 2026-02-24 | Foster Karen A. | officer | Withheld for tax | 13,013 | 211,083 | Form 4 |
| 2026-02-24 | Berard Todd | officer | Withheld for tax | 8,846 | 166,293 | Form 4 |
| 2026-02-24 | Aebersold Sarah | officer | Withheld for tax | 5,734 | 93,579 | Form 4 |
| 2026-02-24 | DuRoss Amy | director | Award / grant | 8,170 | 26,857 | Form 4 |
| 2026-02-24 | MOORE TIMOTHY L. | director | Award / grant | 8,170 | 44,943 | Form 4 |
| 2026-02-24 | Werner Sean | officer | Award / grant | 24,116 | 50,043 | Form 4 |
| 2026-02-24 | Aebersold Sarah | officer | Award / grant | 23,548 | 99,313 | Form 4 |
| 2026-02-24 | DE GREEF RODERICK | director | Award / grant | 219,024 | 831,033 | Form 4 |
| 2026-02-24 | GOSWAMI JOYDEEP | director | Award / grant | 8,170 | 53,156 | Form 4 |
| 2026-02-24 | Foster Karen A. | officer | Award / grant | 32,112 | 224,096 | Form 4 |
| 2026-02-24 | Mathew Aby J. | officer | Award / grant | 20,096 | 369,446 | 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.