Aug 28, 2026Purchase
— · Member of the executive management
Share · 1000.0 shares × 92.86 CHF · —
COMPANY RESEARCH
Straumann Holding AG
STMN.SW · Switzerland · Healthcare · Medical Instruments & Supplies
INSIDER SIGNAL
Insider activity score：54.4 / 100
Buyers not named in the filings · 8 purchase line(s) · €1.14m net purchases
Europe #466 · Switzerland #29
WHY THIS SIGNAL?
Score anatomy
Each bar shows the contribution to the current score; the weights and formula stay unchanged.
Cluster+17.4 / 35
How many distinct insiders bought in the cluster
Purchase size+22.6 / 25
Purchase value relative to company size and liquidity
Role+15.0 / 20
The seniority and relevance of participating insiders
Recency+0.3 / 10
How recently the purchases occurred
Conviction+9.1 / 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 · c-suite involved
The role contribution uses the inverted role input of the current European model.
Buying concentration
The filings do not name the buyer, so who bought how much cannot be worked out.
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 |
|---|---|---|
| — | 92.86 CHF | Aug 28, 2026 |
| — | 92 CHF | Aug 27, 2026 |
| — | 64.56 CHF | May 7, 2026 |
Model details
Cluster breakdown (does not change the score)
Not measured: the scoring window holds no purchase filing with both a buyer name and a trade date.
What the filings show
- 🟢 Recent eligible purchase
— · 93k CHF · Price 92.86 CHF · Aug 28, 2026 - 🟢 PDMR purchase
— · 202k CHF · Price 92 CHF · Aug 27, 2026 - 🟢 PDMR purchase
— · 776k CHF · Price 64.56 CHF · May 7, 2026 - 🟡 1 remaining qualified transaction line(s) across 1 disclosure(s)
- 🔴 1 other transaction line(s) are not counted as discretionary-buying evidence; 0 have zero price
Insider vs stock price
4 purchase day(s), 8 purchase line(s) in the 180-day window. 1 sale day(s), 1 sale line(s).
Daily close (CHF)Day with an insider purchaseDay with an insider sale
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 |
|---|---|---|---|---|
| 2026-05-07 | 1 | 1,066 +6.6% | 983 −1.7% | +83 +8.3 pts |
| 2026-06-01 | 1 | 975 −2.5% | 992 −0.8% | −17 −1.7 pts |
| 2026-08-27 | 1 | 982 −1.8% | 970 −3.0% | +12 +1.2 pts |
| 2026-08-28 | 1 | 970 −3.0% | 970 −3.0% | 0 +0.0 pts |
3 of 4 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 (91 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
One insider bought, 4 times, the latest (28 Aug). The share closed at 94.32 that day and at 91.48 most recently (−3.0%). 1 of the buyers also disclosed a sale in the window.
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.
×A sale
A cross is one insider's sales on one day. People sell to pay tax, to cash in share awards or to hold less of one company, so a sale says less than a purchase does. When someone bought and sold on the same day, the cross sits beside the dot. The totals are under “Purchases against sales” below.
Blue line: this share's price, +2.4% over these six months
The closing price of each day, from 89.36 on 2026-04-21 to 91.48 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, −0.9%
Taken from the 89 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 +2.4%, the typical one −0.9%, 3.3 points ahead. 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.
Who traded
| Insider | Role | Purchases | Sales | Bought | First purchase | Share price since | Earlier purchases |
|---|---|---|---|---|---|---|---|
| Unknown insider | Executive | 4 | 1 | 1.2M CHF | 2026-05-07 | +6.6% | fewer than 5 completed |
Purchases against sales
Purchases91%1.2M CHF · 8 line(s) · 0 insider(s)
Sales9%117.0k CHF · 1 line(s) · 0 insider(s)
Shares of the reported value of insider transactions in the 180-day window. Sales include disposals for tax, at option exercise or under a pre-set plan, which say little about an insider's view. The split describes what was disclosed; it is not a signal.
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% | 0.496; source unavailable, filled with a cohort-neutral value | 17.4 |
| Qualified-buy size | 25% | 0.904 | 22.6 |
| Role informativeness (inverted) | 20% | 0.250 | 5.0 |
| Recency | 10% | 0.031 | 0.3 |
| Buy/sell conviction | 10% | 0.909 | 9.1 |
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: no longer on the bull side: large purchases; new on the bear side: small purchases. 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 short sellers argue against (published short positions). No data is held for: company actions.
- The insider purchases themselvesBullsenior executive buying Bearsmall purchases2 checked, under the threshold · 3 missing
- Share price and trading2 checked, under the threshold
- Short sellersBearpublished short positions
- Company results1 checked, under the threshold · 1 missing
- Company actions1 missing
Bull case · the buying is informative
- The buyers include a senior executive, 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
- Net purchases of €1.1M are <0.01% of the company's market value (€16.1bn): a visible sum, a small one against the business.
- Short sellersDisclosed net short positions total 3.74% of the share capital: other professional investors are positioned the opposite way. On 2026-10-02 it was 3.85%: down 0.11 points since.
Evidence still missing
- This register does not name the filer, so the 8 purchase lines may come from one person or from several. Breadth of buying cannot be judged.
- Only one reading of profitability is held (profit margin 14%). Whether earnings and cash flow are rising or falling needs the last two reports side by side.
- The next scheduled results are on 2026-10-28. They are the first hard test of either reading.
- 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 8 purchase lines mentions a plan, but a bare “Purchase” 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: 5
- BearInsiders sold €126k in the same 180 days, 10% of the amount bought. Counted for the bear side from 25%.
- EitherThe latest purchase is 50 days old. Bull up to 14 days, bear from 90.
- BearThe share price changed +9.3% over six months (three months −13%, one month −2.2%). Counted for the bear side from a fall of 20%.
- BearOver three months the share price changed −13% and the median of 271 Healthcare companies changed −6.3%: behind by 7 points. Counted for the bear side from 20 points behind.
- BearProfit margin on the latest captured figures is 14%. 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
54.4 / 100
Latest recorded score
↓ -1.9 ptssince the first recorded snapshot on 2026-09-23; 25 calendar days observed
- Recorded snapshots
- 21
- First snapshot
- 2026-09-23
There is not yet a 30-calendar-day comparison; earlier scores are not reconstructed. 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?
Less than 30 days of comparable history is available, so factor movement is not yet decomposed.
Signal score history
Fixed 0–100 scale; dates are spaced by calendar time.
Recent recorded points
- 56.3
- 55.1
- 54.8
- 54.5
- 54.4
View all recorded scores
| Snapshot date | Signal score |
|---|---|
| 2026-09-23 | 56.3 |
| 2026-09-24 | 56.3 |
| 2026-09-25 | 56.2 |
| 2026-09-28 | 55.5 |
| 2026-09-29 | 55.1 |
| 2026-09-30 | 55.1 |
| 2026-10-01 | 55.0 |
| 2026-10-02 | 55.0 |
| 2026-10-03 | 55.0 |
| 2026-10-04 | 55.0 |
| 2026-10-05 | 54.8 |
| 2026-10-06 | 54.7 |
| 2026-10-07 | 54.7 |
| 2026-10-08 | 54.7 |
| 2026-10-09 | 54.6 |
| 2026-10-12 | 54.5 |
| 2026-10-13 | 54.5 |
| 2026-10-14 | 54.4 |
| 2026-10-15 | 54.4 |
| 2026-10-16 | 54.4 |
| 2026-10-18 | 54.4 |
Sector context
- Buying breadth
- 6.1% (48 / 792 issuers)
- Sector rank
- #11 / 12
- 7D breadth change
- -0.4 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
The filings for this company do not name the buyer, so past purchases cannot be followed person by person.
Market context
PRICE PERFORMANCE
VOLATILITY & LIQUIDITY
- Volatility
- 31.3%
- Beta
- 1.36
- Avg daily volume
- CHF 33.5M
VALUATION
- Market cap
- CHF 15.0B
- P/E
- 40.6×
FUNDAMENTALS
- Profit margin
- 14.0%
- ROE
- 17.0%
- Industry
- Medical Instruments & Supplies
Prices to 07 Oct 2026: price cache (Eulerpool). From OpenBB/yfinance, captured 16 Oct 2026: Market cap, P/E, Profit margin, ROE, Beta, Industry. It does not affect the insider score or rank.
Disclosed net short positions
The register for this issuer's home market (CH) is not captured; the figures below cover only positions notified to the FCA.
- Aggregate net short
- 3.74%
- Latest position date
- 12 Oct 2026
The FCA publishes one aggregate figure per issuer, the sum of all positions notified to it, and does not name the holders. Source: FCA · read 18 Oct 2026
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: 246 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
The filing records held for this company carry no link to the original notice.
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
11 qualifying purchase disclosure(s) · 11 transaction line(s)
Aug 27, 2026Purchase
— · Member of the executive management
Share · 2200.0 shares × 92.0 CHF · —
Jun 1, 2026Purchase
— · Member of the board of directors
Share · 1050.0 shares × 94.14 CHF · —
Unfold all 8 remaining filing row(s)
| Transaction date | Published | Filer | Role | Transaction | Instrument | Price (local currency) | Quote currency | Volume | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2026-05-07 | 2026-05-07 | — | Member of the board of directors | Purchase | Share | 64.56 CHF | CHF | 4646.0 | — |
| 2026-05-07 | 2026-05-07 | — | Member of the board of directors | Purchase | Share | 64.56 CHF | CHF | 2517.0 | — |
| 2026-05-07 | 2026-05-07 | — | Member of the board of directors | Purchase | Share | 64.56 CHF | CHF | 1742.0 | — |
| 2026-05-07 | 2026-05-07 | — | Member of the board of directors | Purchase | Share | 64.56 CHF | CHF | 1607.0 | — |
| 2026-05-07 | 2026-05-07 | — | Member of the board of directors | Purchase | Share | 64.56 CHF | CHF | 1510.0 | — |
| 2026-03-31 | 2026-03-31 | — | Member of the executive management | Purchase | Share | 81.9816 CHF | CHF | 1800.0 | — |
| 2026-03-20 | 2026-03-20 | — | Member of the executive management | Purchase | Share | 76.37987142857143 CHF | CHF | 1400.0 | — |
| 2026-03-19 | 2026-03-19 | — | Member of the executive management | Purchase | Share | 77.7 CHF | CHF | 3800.0 | — |
Showing 11 of 11 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 6 other transaction(s)
Jun 30, 2026Sale
— · Member of the board of directors
Share · 1100.0 shares × 106.4 CHF · —
Mar 25, 2026Sale
— · Member of the executive management
Share · 634400.0 shares × 80.56 CHF · —
Mar 16, 2026Sale
— · Member of the executive management
Share · 31250.0 shares × 80.37348256 CHF · —
Unfold all 3 remaining filing row(s)
| Transaction date | Published | Filer | Role | Transaction | Instrument | Price (local currency) | Quote currency | Volume | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2025-12-08 | 2025-12-08 | — | Member of the board of directors | Sale | Share | 92.7806046511628 CHF | CHF | 430.0 | — |
| 2025-11-25 | 2025-11-25 | — | Member of the executive management | Sale | Share | 100.03052476534296 CHF | CHF | 34625.0 | — |
| 2025-11-13 | 2025-11-13 | — | Member of the executive management | Sale | Share | 104.2 CHF | CHF | 564.0 | — |
Showing 6 of 6 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
- STMN.SW
- ISIN
- CH1175448666
- Sector
- Healthcare
- Industry
- Medical Instruments & Supplies
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