| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 5Developing evidence | 100.0% (5/5) | 60.0% (3/5) | +0.6% | +3.3% | -3.5% |
| 20D | 5Developing evidence | 100.0% (5/5) | 60.0% (3/5) | +4.1% | +1.3% | -13.4% |
| 60D | 3Small sample | 100.0% (3/3) | 66.7% (2/3) | +8.0% | +0.7% | -19.2% |
| 120D | 3Small sample | 100.0% (3/3) | 33.3% (1/3) | -4.0% | -0.2% | -28.5% |
COMPANY RESEARCH
Kromek Group plc
KMK.L · United Kingdom · Technology · Scientific & Technical Instruments
INSIDER SIGNAL
Insider activity score：49.1 / 100
2 insiders · 3 purchase events · €35k net purchases
Europe #672 · United Kingdom #173
WHY THIS SIGNAL?
Score anatomy
Each bar shows the contribution to the current score; the weights and formula stay unchanged.
Cluster+21.0 / 35
How many distinct insiders bought in the cluster
Purchase size+17.0 / 25
Purchase value relative to company size and liquidity
Role+20.0 / 20
The seniority and relevance of participating insiders
Recency+1.1 / 10
How recently the purchases occurred
Conviction+10.0 / 10
How clearly buying stands out from other activity
What is holding the score back?
- ⚠ Buyer breadth is moderate · fewer than 4 distinct filers
- ⚠ Purchase activity is becoming less recent
- ✓ Strong insider role · ceo/chair involved
The role contribution uses the inverted role input of the current European model.
Buying concentration
66%
Largest buyer：Rakesh Sharma · 20k GBP
Gross qualified purchase transaction-line value：30k GBP
The headline € total is net buying for the screen; this module uses gross qualified purchase transaction-line values in the filing currency, so the amounts can differ. The current 15-day buyer-breadth input counts distinct buyers; value concentration is disclosed separately here.
This is a ranking under the current European screening rules—not a probability of gain, return forecast, or buy recommendation.
Key purchase quotes (filing currency)
| Filer | Price per unit | Trade date |
|---|---|---|
| Rakesh Sharma | 0.0688 GBP | Sep 15, 2026 |
| Kathleen Sharma | 0.0694 GBP | Sep 14, 2026 |
| Rakesh Sharma | 0.0757 GBP | Jul 31, 2026 |
Model details
Cluster breakdown (does not change the score)
- 15-day buyer breadth (count)
- 2 distinct reported filers
- Peak time window
- 2026-09-14 to 2026-09-15
- Current breadth input
- 0.600 (capped at 4+ buyers)
- Buyer independence
- Not yet measured; related-party fields are not cross-market comparable
What the filings show
- 🟢 Recent eligible purchase
Rakesh Sharma · 10k GBP · Price 0.0688 GBP · Sep 15, 2026 - 🟢 PDMR purchase
Kathleen Sharma · 10k GBP · Price 0.0694 GBP · Sep 14, 2026 - 🟢 PDMR purchase
Rakesh Sharma · 10k GBP · Price 0.0757 GBP · Jul 31, 2026 - 🔴 6 other transaction line(s) are not counted as discretionary-buying evidence; 0 have zero price
Insider vs stock price
3 purchase day(s), 3 purchase line(s) in the 180-day window.
Daily close (GBp)Day with an insider purchase
Markers sit on the closing price of the transaction day. They show when insiders traded, not the price they paid or received. "Since" compares that day's close with the last close shown; it is what happened at this company, not a forecast.
If you had followed the purchase
Each row starts on the first close on or after the day a purchase was made public, the earliest a reader could have acted, and ends on the last close shown above.
| Made public | Insiders | In this stock, now | In the median peer stock, now | Difference |
|---|---|---|---|---|
| 2026-08-04 | 1 | 803 −19.7% | 980 −2.0% | −178 −17.8 pts |
| 2026-09-14 | 1 | 889 −11.1% | 992 −0.8% | −104 −10.4 pts |
| 2026-09-15 | 1 | 907 −9.3% | 996 −0.4% | −89 −8.9 pts |
0 of 3 disclosure day(s) ended ahead of the median peer stock.
Close to close, before costs, taxes, dividends and currency moves. The peer is the median of the other stocks on the same exchange for which this site holds prices (454 here), not an index. This is what happened, not a forecast: across all purchases on this site the typical gap is close to zero.
Insider timeline
2 insiders bought within 2 days, 14 Sep to 15 Sep: 2 CEO / chair. The share closed at 6.86 on the first of those days and at 6.10 most recently (−11.1%). That week 173 companies across Europe disclosed insider purchases, an ordinary week (18 of the last 26).
Tap an item for what it means.
●A purchase: the bigger the dot, the more was bought
Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.
▮Purple band: several insiders bought within 15 days
The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 14 Sep – 15 Sep, with 2 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.
Blue line: this share's price, −43.9% over these six months
The closing price of each day, from 10.88 on 2026-04-21 to 6.10 on 2026-10-07. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.
Dashed line: the typical stock on the same exchange, +2.4%
Taken from the 491 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −43.9%, the typical one +2.4%, 46.3 points behind. It is not an index and not a comparison within one industry.
▂Grey bars: companies across Europe disclosing purchases each week
A taller bar is a week in which more companies disclosed insider purchases. The purple bar is the week of the band above: 173 companies, number 18 of the last 26 weeks. If that week was a peak anyway, buying together is less special than it looks.
This company: insiders buying per month, last 12 months
Nov
Dec
Jan
Feb
1Mar
Apr
May
Jun
1Jul
Aug
2Sep
Oct
Darker bars are inside the 180-day window above.
Who traded
| Insider | Role | Purchases | Sales | Bought | First purchase | Share price since | Earlier purchases |
|---|---|---|---|---|---|---|---|
| Rakesh Sharma | CEO / chair | 2 | — | 19.8k GBP | 2026-07-31 | −17.6% | fewer than 5 completed |
| Kathleen Sharma | CEO / chair | 1 | — | 10.0k GBP | 2026-09-14 | −11.1% | fewer than 5 completed |
Why this score? · Model details
Priority = 100 × Σ(fixed weight × 0–1 rule-based input)
| Factor | Weight | This company input | Point contribution |
|---|---|---|---|
| 15-day buyer breadth (count) | 35% | 0.600 | 21.0 |
| Qualified-buy size | 25% | 0.679 | 17.0 |
| Role informativeness (inverted) | 20% | 0.000 | 0.0 |
| Recency | 10% | 0.109 | 1.1 |
| Buy/sell conviction | 10% | 1.000 | 10.0 |
This is a heuristic ordering under the current rules, not a calibrated return forecast. It explains why candidates rank differently; the public-filing evidence and data limits are shown below.
BULL VS BEAR
Two readings of this buying
The same filings, read two ways. Each line is a fact stored for this company with the number behind it, and appears only when that number crosses a fixed threshold. Neither side is a forecast and no winner is declared.
Since 2026-10-13, neither column has changed. All bull and bear lists, and what followed each line in the past →
Where the evidence comes from
The two kinds of evidence disagree: the purchases themselves carry bull lines (senior executive buying), while share price and trading argue against (price down over six months, price trails its sector).
- The insider purchases themselvesBullsenior executive buying Bearusual level for this company6 checked, under the threshold · 3 missing
- Share price and tradingBearprice down over six months, price trails its sector
- Short sellers1 checked, under the threshold
- Company results1 checked, under the threshold · 1 missing
- Company actions1 checked, under the threshold
Bull case · the buying is informative
- The buyers include the CEO or chair, who sees more of the business than most filers. This site's score gives little or no credit for that: in its backtests purchases by senior executives did no better than other insiders' purchases.Record: after 8,797 earlier disclosures like this, the median 60-session excess return was −3.1%, within 1 percentage point of all comparable disclosures (−3.2%).
Bear case · discount it
- Buying at this level is normal here: 2 insiders bought in the previous 180 days and 2 in this one.Record: after 2,869 earlier disclosures like this, the median 60-session excess return was −2.6%, within 1 percentage point of all comparable disclosures (−2.7%).
- Share price and tradingThe share price is down 42% over six months (three months −29%, one month −20%). Insiders have bought into a fall the market has not reversed.Record (nearest stored case: price 20% or more below its prior 52-week high): after 11,077 earlier disclosures like this, the median 60-session excess return was −3.2%, within 1 percentage point of all comparable disclosures (−2.6%).
- Share price and tradingOver three months the share price changed −29% and the median of 330 Technology companies changed −2.4%: 27 points behind. The market has marked this company down against its own sector.
Evidence still missing
- No buyer here has 5 or more completed earlier purchases on record, so there is no track record to weigh.
- Only one reading of profitability is held (profit margin 2.7%). Whether earnings and cash flow are rising or falling needs the last two reports side by side.
- European notifications have no field saying whether a purchase was pre-arranged; there is no counterpart to the US 10b5-1 box. None of the 3 purchase lines mentions a plan, but a bare “Purchase of ordinary shares” does not rule one out.
- The filings give the size of each trade, not what the buyer already held. Whether a purchase added 1% to a personal stake or doubled it is not known.
Checked and under the threshold: 9, 3 close to it
- BullAt most 2 insiders bought within any 15 days. Counted for the bull side from 3. close to the threshold
- BearThe largest buyer accounts for 66% of the value bought. Counted for the bear side from 80%. close to the threshold
- EitherNet purchases equal 0.08% of the company's market value. Bull from 0.10%, bear below 0.01%. close to the threshold
- Bear0 of 2 buyers filed as a person closely associated with a manager. Counted for the bear side from half.
- BearNo insider sale is recorded in the same 180 days.
- EitherThe latest purchase is 32 days old. Bull up to 14 days, bear from 90.
- BearThe register of FCA shows no published net short position in this company.
- BullThe company announced no transaction in its own shares in the last 30 days.
- BearProfit margin on the latest captured figures is 2.7%. Counted for the bear side when negative.
Both columns arrange stored facts only. They do not change the insider score or the ranking and are not investment advice.
Signal history
49.1 / 100
Latest recorded score
↑ +2.3 ptsversus the comparable snapshot on 2026-09-14 (34 calendar days apart)
- Recorded snapshots
- 35
- First snapshot
- 2026-08-26
Only scores captured when the scoring run completed are compared. These are raw signal scores saved when each full scoring run completed. They describe changes in research ranking, not price performance or returns.
Why did it change?
Decomposition across the five score factors between comparable snapshots; historical scores are not recalculated.
- Cluster+10.5 pts
- Purchase size+0.7 pts
- Recency-8.9 pts
Signal score history
Fixed 0–100 scale; dates are spaced by calendar time.
Recent recorded points
- 41.4
- 36.4
- 52.0
- 50.1
- 49.1
View all recorded scores
| Snapshot date | Signal score |
|---|---|
| 2026-08-26 | 41.4 |
| 2026-08-27 | 41.4 |
| 2026-08-28 | 38.2 |
| 2026-08-31 | 38.0 |
| 2026-09-01 | 37.9 |
| 2026-09-02 | 37.8 |
| 2026-09-03 | 37.7 |
| 2026-09-04 | 37.7 |
| 2026-09-07 | 36.4 |
| 2026-09-08 | 36.3 |
| 2026-09-09 | 36.3 |
| 2026-09-10 | 36.2 |
| 2026-09-11 | 36.2 |
| 2026-09-14 | 46.8 |
| 2026-09-23 | 53.7 |
| 2026-09-24 | 53.3 |
| 2026-09-25 | 52.9 |
| 2026-09-28 | 52.0 |
| 2026-09-29 | 51.7 |
| 2026-09-30 | 51.5 |
| 2026-10-01 | 51.3 |
| 2026-10-02 | 51.0 |
| 2026-10-03 | 51.0 |
| 2026-10-04 | 51.0 |
| 2026-10-05 | 50.5 |
| 2026-10-06 | 50.3 |
| 2026-10-07 | 50.1 |
| 2026-10-08 | 50.0 |
| 2026-10-09 | 49.9 |
| 2026-10-12 | 49.5 |
| 2026-10-13 | 49.4 |
| 2026-10-14 | 49.3 |
| 2026-10-15 | 49.2 |
| 2026-10-16 | 49.1 |
| 2026-10-18 | 49.1 |
Sector context
- Buying breadth
- 6.0% (44 / 734 issuers)
- Sector rank
- #12 / 12
- 7D breadth change
- -1.2 pp · vs 2026-10-12 (6d)
- 30D breadth change
- History building
This is sector-level research context. It does not affect the Insider Signal or ranking.
Insider profile outcomes
Historical performance following insider filings. The company role is translated below each name while preserving the original title.
- Excess return = stock return − FTSE 100 return over the same period.
- Hit rate = completed events with positive excess return ÷ total completed events.
- Price coverage = valid point-in-time prices ÷ events mature enough for that period.
- Returns start on the first shared trading session on or after publication.
- Small-sample rule: n<5 is shown for transparency and is not scored.
Events are disclosure-level observations; related disclosures published on the same date may share a return path and may not be statistically independent. This research enrichment does not affect the insider score or ranking.
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 1Small sample | 100.0% (1/1) | 0.0% (0/1) | -8.8% | -8.8% | -8.8% |
| 20D | 1Small sample | 100.0% (1/1) | 0.0% (0/1) | -16.5% | -16.5% | -16.5% |
| 60D | 0No data | Awaiting maturity | — | — | — | — |
| 120D | 0No data | Awaiting maturity | — | — | — | — |
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 1Small sample | 100.0% (1/1) | 100.0% (1/1) | +8.7% | +8.7% | +8.7% |
| 20D | 1Small sample | 100.0% (1/1) | 0.0% (0/1) | -3.7% | -3.7% | -3.7% |
| 60D | 1Small sample | 100.0% (1/1) | 100.0% (1/1) | +70.7% | +70.7% | +70.7% |
| 120D | 1Small sample | 100.0% (1/1) | 100.0% (1/1) | +59.5% | +59.5% | +59.5% |
Market context
PRICE PERFORMANCE
VOLATILITY & LIQUIDITY
- Volatility
- 61.6%
- Beta
- 1.39
- Avg daily volume
- £85,225.2
VALUATION
- Market cap
- £36.7M
- P/E
- —
FUNDAMENTALS
- Profit margin
- 2.7%
- ROE
- 1.4%
- Industry
- Scientific & Technical Instruments
Prices to 07 Oct 2026: price cache (Eulerpool). From OpenBB/yfinance, captured 18 Oct 2026: Market cap, Profit margin, ROE, Beta, Industry. It does not affect the insider score or rank.
Disclosed net short positions
The FCA register, read 18 Oct 2026, publishes no aggregate net short position for this issuer.
Short-position disclosures are external context; they do not affect the insider score, ranking, or filing eligibility.
Insiders' buying price vs the latest close
The latest close in the price history is more than a week old.
Buying size vs market trading
Market history is too old for this snapshot; ratios are withheld.
Market-data coverage: 255 verified sessions · Latest session: 2026-10-07 · Ratio status: Unavailable
Traded value is estimated as close × shares traded, in major currency units. Includes disclosed qualifying purchases; disclosures may lag. Contractual or planned acquisitions are not necessarily discretionary. Ratios describe relative trading size, not market participation or score contributions.
Latest news
No news has been captured for this company.
Regulatory filings
- Insider filing announcement · published 2026-09-15 · trade date 2026-09-15
- Insider filing announcement · published 2026-09-14 · trade date 2026-09-14
- Insider filing announcement · published 2026-08-06 · trade date 2026-08-05
Unfold all 9 filings
- Insider filing announcement · published 2026-09-15 · trade date 2026-09-15
- Insider filing announcement · published 2026-09-14 · trade date 2026-09-14
- Insider filing announcement · published 2026-08-06 · trade date 2026-08-05
- Insider filing announcement · published 2026-08-03 · trade date 2026-07-31
- Insider filing announcement · published 2026-06-04 · trade date 2026-06-02
- Insider filing announcement · published 2026-06-01 · trade date 2026-05-28
- Insider filing announcement · published 2026-03-09 · trade date 2026-03-09
- Insider filing announcement · published 2025-11-03 · trade date 2025-10-31
- Insider filing announcement · published 2025-10-28 · trade date 2025-10-27
Filing evidence
These are underlying national-feed records from the 365-day window ending on the saved ranking snapshot. The score uses only the latest 180 days; older qualifying equity purchases remain visible for audit but do not enter the current score. The original filer, role, transaction classification, instrument, price, volume, value and source fields are retained. The first three rows are shown; remaining records can be unfolded for audit. Other transaction types are retained but excluded from the score.
Excluded transactions & classification
5 qualifying purchase disclosure(s) · 5 transaction line(s)
Sep 15, 2026Purchase of ordinary shares
Rakesh Sharma · Non-executive Chairman
Ordinary shares of 1 penny each · 145454 shares × 0.0688 GBP · —
Open filingSep 14, 2026Purchase of ordinary shares
Kathleen Sharma · Wife of Rakesh Sharma, Non-executive Chairman
Ordinary shares of 1 penny each · 144092 shares × 0.0694 GBP · —
Open filingJul 31, 2026Purchase of ordinary shares
Rakesh Sharma · Non-executive Chairman
Ordinary shares of 1 penny each · 129413 shares × 0.0757 GBP · —
Open filingUnfold all 2 remaining filing row(s)
| Transaction date | Published | Filer | Role | Transaction | Instrument | Price (local currency) | Quote currency | Volume | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2026-03-09 | 2026-03-09 | Rakesh Sharma | Non-executive Chairman | Purchase of ordinary shares | Ordinary shares of 1 penny each | 0.0974 GBP | GBP | 102669 | Open filing |
| 2025-10-31 | 2025-11-03 | Matthew Boyle | Non-executive Director | Purchase of ordinary shares | Ordinary shares of 1 penny each | 0.0674 GBP | GBP | 285000 | Open filing |
Showing 5 of 5 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level € aggregate is separately FX-normalised for research ranking, not a trade-date conversion.
Other disclosed transactions · excluded from score
View 15 other transaction(s)
Aug 5, 2026Grant of options
Arnab Basu · Chief Executive Officer
Options over ordinary shares of 1 penny each · 555687 shares × — · —
Open filingAug 5, 2026Grant of options
Berry Beumer · Chief Operating Officer and President of the Advanced Imaging Division
Options over ordinary shares of 1 penny each · 555687 shares × — · —
Open filingJun 2, 2026Grant of options under Long-Term Incentive Plan
Arnab Basu · Chief Executive Officer
Options over ordinary shares of 1 penny each · 7640437 shares × 0.01 GBP · —
Open filingUnfold all 12 remaining filing row(s)
| Transaction date | Published | Filer | Role | Transaction | Instrument | Price (local currency) | Quote currency | Volume | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2026-06-02 | 2026-06-04 | Claire Burgess | Chief Financial Officer | Grant of options under Long-Term Incentive Plan | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 2458256 | Open filing |
| 2026-06-02 | 2026-06-04 | Berry Beumer | Chief Operating Officer and President of the Advanced Imaging Division | Grant of options under Long-Term Incentive Plan | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 5467805 | Open filing |
| 2026-05-28 | 2026-06-01 | Berry Beumer | Chief Operating Officer and President of the Advanced Imaging Division | Exercise of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 150000 | Open filing |
| 2025-10-27 | 2025-10-28 | Arnab Basu | Chief Executive Officer | 1. Grants of options 2. Exercise of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 1111375 | Open filing |
| 2025-10-27 | 2025-10-28 | Arnab Basu | Chief Executive Officer | 1. Grants of options 2. Exercise of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 469355 | Open filing |
| 2025-10-27 | 2025-10-28 | Arnab Basu | Chief Executive Officer | 1. Grants of options 2. Exercise of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 110000 | Open filing |
| 2025-10-27 | 2025-10-28 | Berry Beumer | Chief Operating Officer and President of the Advanced Imaging Division | Grant of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 1111375 | Open filing |
| 2025-10-27 | 2025-10-28 | Claire Burgess | Chief Financial Officer | Grant of options | Options over ordinary shares of 1 penny each | 0.056 GBP | GBP | 1500000 | Open filing |
| 2025-10-27 | 2025-10-28 | Rakesh Sharma | Chairman | Grant of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 59033 | Open filing |
| 2025-10-27 | 2025-10-28 | Christopher Wilkes | Non-executive Director | Grant of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 31104 | Open filing |
| 2025-10-27 | 2025-10-28 | Lawrence Kinet | Non-executive Director (at the time of the transaction) | Grant of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 14352 | Open filing |
| 2025-10-27 | 2025-10-28 | Jerel Whittingham | Non-executive Director (at the time of the transaction) | Grant of options | Options over ordinary shares of 1 penny each | 0.01 GBP | GBP | 15552 | Open filing |
Showing 15 of 15 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level € aggregate is separately FX-normalised for research ranking, not a trade-date conversion.
Snapshot & identity
- Snapshot date
- 2026-10-18
- Ticker
- KMK.L
- ISIN
- GB00BD7V5D43
- Sector
- Technology
- Industry
- Scientific & Technical Instruments
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