$TNGX

$22.20 -$1.14 (4.91%) Close

$TNGX Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 168.6M shares outstanding

Who owns TNGX?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 71.9%

EcoR1 Capital, LLC 14.2% · RTW Investments, LP 8.2%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

245

+51 vs last qtr

Net shares bought

+33.5M

by institutions in Q2 2026

New / sold out

76 / 25

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Price T Rowe Associates Inc /MD/ +5.5M
Jupiter Topco LLC NEW +5.1M

Biggest sellers in Q2 2026

Nextech Invest Ltd. SOLD OUT −7.3M
Adage Capital Partners GP, L.L.C. −7.2M

Who is planning to sell?

Notices of proposed sale, last 12 months

$172M

9 notices from 4 people

Shares covered

5.9M

3.49% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Nextech Crossover I SCSp Former affiliate $113M
Daniella Beckman Officer $51.7M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2021–FY2025

+87.0%

+16.95% a year

Each share's claim on the business

−46.5%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $96.5M

over 5 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years32% 1–3 years32% Under 1 year36%

Quarterly turnover

28.1%

of institutional shares changed hands

Top 10 managers, median time held

2.8 years

Super Investors

Investment managers reporting TNGX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RI RTW Investments, LP	13.9M	8.24%	+600.0K (+4.5%)	Q4 '25	3.7%
Shares held by quarter Peak holding13.9M (Q2'26) Change over 8 quarters+13.9M Share of the company8.240% RTW Investments, LP's full portfolio →
AC Adage Capital Partners GP, L.L.C.	5.6M	3.32%	−7.2M (−56.3%)	2025	0.3%
Shares held by quarter Peak holding12.8M (Q1'26) Change over 8 quarters+3.3M Share of the company3.320% Adage Capital Partners GP, L.L.C.'s full portfolio →

RTW Investments, LP

13.9M

% of company

8.24%

Change vs last qtr

+600.0K (+4.5%)

Held since

Q4 '25

Adage Capital Partners GP, L.L.C.

5.6M

% of company

3.32%

Change vs last qtr

−7.2M (−56.3%)

Held since

2025

28 more super investors behind a free account

See every manager holding Tango Therapeutics, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting TNGX on Form N-PORT; together they hold 27.9% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$137M	4.4M	2.61%	0.01%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$113M	3.6M	2.14%	0.14%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$137M

% of company

2.61%

% of the fund

0.01%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$113M

% of company

2.14%

% of the fund

0.14%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Tango Therapeutics, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
EC EcoR1 Capital, LLC Insider	24.0M	14.21%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company14.210% EcoR1 Capital, LLC's insider activity →
DA Davis Aaron I. 5%+ holder 13D · 10.0%	10.7M	6.37%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company6.370% Disclosed stake13D · 10.0% View the 13D/G filing →

EcoR1 Capital, LLC

Insider

24.0M

% of company

14.21%

Change vs last qtr

—

Held since

—

Davis Aaron I.

5%+ holder13D · 10.0%

10.7M

% of company

6.37%

Change vs last qtr

—

Held since

—

16 more holders behind a free account

See every insider and 5%+ holder of Tango Therapeutics, Inc..

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