Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Black Diamond Therapeutics, Inc.

BDTX · Nasdaq · CIK 0001701541 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

4 Form 4 transaction lines observed in the same window
0 sales · 4 option, withholding, award, gift or other lines

Last qualifying purchase2023-10-17 · BB BIOTECH AG; BIOTECH GROWTH N V · $936.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Behbahani AliDirector
○○
Raman PrakashDirector
○○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2023-10-17 · BB BIOTECH AG; BIOTECH GROWTH N V.

Recent Form 4 activity

0Purchases
0Sales
8Other Form 4 lines
8SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER4 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-10.9%
3M
-5.0%
6M
-43.8%
12M
-58.6%

Volatility & liquidity

Volatility
78.4%
Beta
—
Avg daily value
USD 1.1M

Valuation

Market cap
USD 98.8M
P/E
0.0×

Fundamentals

Profit margin
—
ROE
19933.0%
Industry
Biotechnology

Market data

Price data up to: 2026-10-16 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-07-30 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
4,775,586
Previous report
5,147,935
Avg daily volume
653,622
Days to cover
7.3

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2023-10-17BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock400,000USD 2.34USD 936,000SEC filing ↗
2023-07-05Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund, L.P.; Shah Rajeev M.Purchase (P)Common Stock935,850USD 5.00USD 4,679,250SEC filing ↗
2023-07-05Behbahani AliPurchase (P)Common Stock1,000,000USD 5.00USD 5,000,000SEC filing ↗
2023-06-30BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock1,000,000USD 5.00USD 5,000,000SEC filing ↗
2023-06-27BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock1,740,000USD 5.49USD 9,552,600SEC filing ↗
2022-12-22Ni FangPurchase (P)Common Stock36,363USD 1.28USD 46,545SEC filing ↗
2022-12-21Ni FangPurchase (P)Common Stock20,000USD 1.29USD 25,800SEC filing ↗
2022-10-31BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock99,801USD 2.25USD 224,552SEC filing ↗
2022-10-28BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock172,974USD 2.18USD 377,083SEC filing ↗
2022-10-27BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock191,678USD 1.87USD 358,438SEC filing ↗
2022-10-21BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock87,850USD 1.51USD 132,654SEC filing ↗
2022-10-20BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock53,734USD 1.42USD 76,302SEC filing ↗
2022-10-19BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock77,689USD 1.32USD 102,549SEC filing ↗
2022-06-29Ni FangPurchase (P)Common Stock25,000USD 2.44USD 61,000SEC filing ↗
2022-04-28BB BIOTECH AG; BIOTECH GROWTH N VPurchase (P)Common Stock255,711USD 2.57USD 657,177SEC filing ↗

Form 4 evidence

8 transaction lines in the latest 365-day window; 502 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Raman PrakashAward / grant (A)Common Stock6,801USD 1.93USD 13,126SEC filing ↗
2026-09-18Behbahani AliAward / grant (A)Common Stock7,707USD 1.93USD 14,875SEC filing ↗
2026-06-19Raman PrakashAward / grant (A)Common Stock7,907USD 1.66USD 13,126SEC filing ↗
Show recent Form 4 evidence (8 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Raman PrakashAward / grant (A)Common Stock6,801USD 1.93USD 13,126SEC filing ↗
2026-09-18Behbahani AliAward / grant (A)Common Stock7,707USD 1.93USD 14,875SEC filing ↗
2026-06-19Raman PrakashAward / grant (A)Common Stock7,907USD 1.66USD 13,126SEC filing ↗
2026-06-19Behbahani AliAward / grant (A)Common Stock8,961USD 1.66USD 14,875SEC filing ↗
2026-03-20Raman PrakashAward / grant (A)Common Stock6,105USD 2.15USD 13,126SEC filing ↗
2026-03-20Behbahani AliAward / grant (A)Common Stock6,919USD 2.15USD 14,876SEC filing ↗
2025-12-12Raman PrakashAward / grant (A)Common Stock4,665USD 2.76USD 12,875SEC filing ↗
2025-12-12Behbahani AliAward / grant (A)Common Stock5,208USD 2.76USD 14,374SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerBDTX
CIK0001701541
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
ExchangeNasdaq

Data coverage

Local Form 4 history502 transaction lines from 2020-02-03 to 2026-09-18
35 P purchase lines · 190 S sale lines · 277 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.