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

Cogent Biosciences, Inc.

COGT · Nasdaq · CIK 0001622229 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

5 Form 4 transaction lines observed in the same window
2 sales · 3 option, withholding, award, gift or other lines

Last qualifying purchase2025-07-10 · Fairmount Funds Management LLC · $25.0M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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
Morris ArleneDirector
○▼
Robbins Andrew RPresident and CEO
○
● 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: 2025-07-10 · Fairmount Funds Management LLC.

Recent Form 4 activity

0Purchases
8Sales
22Other Form 4 lines
14SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING2 sale line(s) · context only
OTHER3 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 has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

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

Shares short
19,462,718
Previous report
18,126,492
Avg daily volume
2,410,217
Days to cover
8.1

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
2025-07-10Fairmount Funds Management LLCPurchase (P)Common Stock2,777,777USD 9.00USD 24,999,993SEC filing ↗
2025-01-14Pinnow ColePurchase (P)Common Stock43,750USD 7.60USD 332,500SEC filing ↗
2023-06-09Fairmount Funds Management LLCPurchase (P)Common Stock800,000USD 12.00USD 9,600,000SEC filing ↗
2022-06-16Fairmount Funds Management LLCPurchase (P)Common Stock1,200,000USD 8.25USD 9,900,000SEC filing ↗
2020-08-18Koh Bong Y; Shah Nimish P; VHCP Co-Investment Holdings II, LLC; VHCP Co-Investment Holdings III, LLC; VHCP Management II, LLC; VHCP Management III, LLC; Venrock Healthcare Capital Partners II, L.P.; Venrock Healthcare Capital Partners III, L.P.Purchase (P)Common Stock101,000USD 2.62USD 264,620SEC filing ↗
2020-08-17Koh Bong Y; Shah Nimish P; VHCP Co-Investment Holdings II, LLC; VHCP Co-Investment Holdings III, LLC; VHCP Management II, LLC; VHCP Management III, LLC; Venrock Healthcare Capital Partners II, L.P.; Venrock Healthcare Capital Partners III, L.P.Purchase (P)Common Stock250,000USD 2.57USD 642,500SEC filing ↗
2020-08-14Koh Bong Y; Shah Nimish P; VHCP Co-Investment Holdings II, LLC; VHCP Co-Investment Holdings III, LLC; VHCP Management II, LLC; VHCP Management III, LLC; Venrock Healthcare Capital Partners II, L.P.; Venrock Healthcare Capital Partners III, L.P.Purchase (P)Common Stock100,000USD 2.30USD 230,000SEC filing ↗

Form 4 evidence

30 transaction lines in the latest 365-day window; 72 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-27Morris ArleneSale (S)Common Stock45,510USD 37.12USD 1,689,388SEC filing ↗
2026-08-27Morris ArleneOption exercise / conversion (M)Common Stock45,510USD 5.39USD 245,497SEC filing ↗
2026-05-19Robbins Andrew RGift (G)Common Stock160,000USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (22 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-27Morris ArleneSale (S)Common Stock45,510USD 37.12USD 1,689,388SEC filing ↗
2026-08-27Morris ArleneOption exercise / conversion (M)Common Stock45,510USD 5.39USD 245,497SEC filing ↗
2026-05-19Robbins Andrew RGift (G)Common Stock160,000USD 0.00USD 0SEC filing ↗
2026-03-31Fairmount Funds Management LLCSale (S)Common Stock7,000,000USD 34.66USD 242,620,000SEC filing ↗
2026-03-31Fairmount Funds Management LLCC (C)Common Stock7,000,000USD —USD —SEC filing ↗
2026-01-22Fairmount Funds Management LLCSale (S)Common Stock3,500,000USD 36.40USD 127,400,000SEC filing ↗
2025-12-26Sachs JessicaSale (S)Common Stock82,642USD 38.70USD 3,198,245SEC filing ↗
2025-12-26Robinson John EdwardSale (S)Common Stock90,000USD 38.74USD 3,486,600SEC filing ↗
2025-12-26Kearns EvanSale (S)Common Stock65,000USD 38.70USD 2,515,500SEC filing ↗
2025-12-26Green John L.Sale (S)Common Stock77,000USD 38.68USD 2,978,360SEC filing ↗
2025-12-17Sachs JessicaTax withholding (F)Common Stock154,716USD 39.45USD 6,103,546SEC filing ↗
2025-12-17Sachs JessicaAward / grant (A)Common Stock370,000USD 0.00USD 0SEC filing ↗
2025-12-17Robinson John EdwardTax withholding (F)Common Stock139,998USD 39.45USD 5,522,921SEC filing ↗
2025-12-17Robinson John EdwardAward / grant (A)Common Stock370,000USD 0.00USD 0SEC filing ↗
2025-12-17Robbins Andrew RTax withholding (F)Common Stock367,497USD 39.45USD 14,497,757SEC filing ↗
2025-12-17Robbins Andrew RAward / grant (A)Common Stock1,025,000USD 0.00USD 0SEC filing ↗
2025-12-17Pinnow ColeTax withholding (F)Common Stock94,800USD 39.45USD 3,739,860SEC filing ↗
2025-12-17Pinnow ColeAward / grant (A)Common Stock264,000USD 0.00USD 0SEC filing ↗
2025-12-17Kearns EvanTax withholding (F)Common Stock125,602USD 39.45USD 4,954,999SEC filing ↗
2025-12-17Kearns EvanAward / grant (A)Common Stock300,000USD 0.00USD 0SEC filing ↗
2025-12-17Green John L.Tax withholding (F)Common Stock145,007USD 39.45USD 5,720,526SEC filing ↗
2025-12-17Green John L.Award / grant (A)Common Stock350,000USD 0.00USD 0SEC 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 · —
TickerCOGT
CIK0001622229
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history72 transaction lines from 2020-04-06 to 2026-08-27
7 P purchase lines · 32 S sale lines · 33 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.