LSE · 4BB · stock
4basebio PLC (4BB) stock price history
Every LSE trading session of 4basebio PLC from Feb 17, 2021 to Sep 28, 2026: 1,416 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
4BB adjusted close, 2021 to 2026
- £18.20
- All time high, 2024
- £8.20
- 52 week high, £4.20 low
- 1,416
- Daily sessions since 2021
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2021 to 2026 series and minute bars.
4BB key facts
- 4basebio PLC (4BB) closed at £5.63 on Sep 28, 2026 on LSE.
- 4BB's all time high close is £18.20, set on Jun 18, 2024; its all time low close is £3.10 on Mar 12, 2021.
- 4BB's 52 week range is £4.20 to £8.20.
- 4BB returned -22.4% over the year to Sep 28, 2026 and -20.8% over five years.
- Since Feb 17, 2021 4BB returned +67%, +9.5% a year compounded.
- 4BB's deepest drawdown was -76.1% from Jun 18, 2024 to May 12, 2026.
- DataCedar holds 1,416 daily sessions of 4BB history from Feb 17, 2021 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
4BB price chart, 2021 to 2026
4BB returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +18.4% |
| 3 months | +7.1% |
| 6 months | +10.3% |
| Year to date | -8.5% |
| 1 year | -22.4% |
| 3 years | +0.9% |
| 5 years | -20.8% |
| 10 years | n/a |
| Since Feb 17, 2021 | +66.7% |
| Compound annual growth, 5.6 years | +9.5% |
4BB records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- £18.20 on Jun 18, 2024
- All time low close
- £3.10 on Mar 12, 2021
- 52 week high
- £8.20 on Oct 30, 2025
- 52 week low
- £4.20 on May 13, 2026
- Deepest drawdown
- -76.1% from Jun 18, 2024 to May 12, 2026, not yet recovered
- Best single session
- +17.7% on Mar 16, 2021
- Worst single session
- -14.8% on Jun 19, 2024
- Volatility, 1 year annualised
- 39.5%
- Sessions closing higher, 1 year
- 12%
- Best calendar year
- 2024, +78%
- Worst calendar year
- 2025, -49%
4BB price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2021 starts on Feb 17, 2021; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | £6.15 | £6.30 | £4.20 | £5.63 | -8.5% | 245.4K | 187 |
| 2025 | £12.10 | £13.00 | £6.00 | £6.15 | -49.2% | 254.5K | 253 |
| 2024 | £6.80 | £18.20 | £6.40 | £12.10 | +77.9% | 1M | 254 |
| 2023 | £7.10 | £7.50 | £4.92 | £6.80 | -4.2% | 462.8K | 251 |
| 2022 | £6.15 | £7.50 | £3.90 | £7.10 | +15.4% | 505K | 250 |
| 2021 | £1.48 | £8.20 | £1.75 | £6.15 | n/a | 1.4M | 221 |
4BB monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | £5.63 | +18.4% |
| August 2026 | £4.75 | -9.5% |
| July 2026 | £5.25 | +1.0% |
| June 2026 | £5.20 | -1.4% |
| May 2026 | £5.28 | +4.5% |
| April 2026 | £5.05 | +6.5% |
| March 2026 | £4.74 | -13.8% |
| February 2026 | £5.50 | -4.3% |
| January 2026 | £5.75 | -6.5% |
| December 2025 | £6.15 | -13.7% |
| November 2025 | £7.13 | -9.8% |
| October 2025 | £7.90 | -0.6% |
About the 4BB data
Daily bars. 1,416 sessions from Feb 17, 2021 to Sep 28, 2026, one row per LSE trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Sep 17, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are LSE trading days; minute timestamps are UTC. Prices are in GBP. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Feb 17, 2021, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/4BB/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on LSE
Common questions
4BB share price history
