Investors / filer profile

Tang Kevin

Chief Executive Officer

active in 2 companies · 2 of 2 positions beat the S&P ~6mo later

Pro
Bought: Pro
Sold: 22
Filings: 2
Companies: 2026-08-26
Last filed

EDGAR · CIK 0001178579 ↗

Track record

How each disclosed position did against the S&P ~6 months later

The outcome curve and every position's resultPro →

+38.5%

median move per position

+11.2%

S&P 500 median, same spans

2 of 2

beat the S&P ~6mo later

1 position still inside the ~6-month window — not scored yet.

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$39.14M bought · −$54.4K sold

All filings on record

Every Form 4 transaction we track for this filer


BOLDBoundless Bio, Inc.	Sell $54.4K · 18,300 sh	2026-08-26	—
BOLDBoundless Bio, Inc.	Buy $35.3K · 14,338 sh	2026-07-08	—
BOLDBoundless Bio, Inc.	Buy $39.2K · 15,810 sh	2026-07-07	—
BOLDBoundless Bio, Inc.	Buy $67.4K · 27,062 sh	2026-07-06	—
BOLDBoundless Bio, Inc.	Buy $24.5K · 9,821 sh	2026-07-02	—
BOLDBoundless Bio, Inc.	Buy $178.3K · 71,612 sh	2026-07-01	—
BOLDBoundless Bio, Inc.	Buy $250.00 · 100 sh	2026-06-30	—
BOLDBoundless Bio, Inc.	Buy $65.9K · 25,930 sh	2026-06-30	—
AUPHAurinia Pharmaceuticals Inc.	Buy $3.15M · 206,005 sh	2026-06-02	—
AUPHAurinia Pharmaceuticals Inc.	Buy $1.5K · 99 sh	2026-06-01	—

BOLDSell

2026-08-26 · Boundless Bio, Inc.

$54.4K

—

BOLDBuy

2026-07-08 · Boundless Bio, Inc.

$35.3K

—

BOLDBuy

2026-07-07 · Boundless Bio, Inc.

$39.2K

—

BOLDBuy

2026-07-06 · Boundless Bio, Inc.

$67.4K

—

BOLDBuy

2026-07-02 · Boundless Bio, Inc.

$24.5K

—

BOLDBuy

2026-07-01 · Boundless Bio, Inc.

$178.3K

—

BOLDBuy

2026-06-30 · Boundless Bio, Inc.

$250.00

—

BOLDBuy

2026-06-30 · Boundless Bio, Inc.

$65.9K

—

AUPHBuy

2026-06-02 · Aurinia Pharmaceuticals Inc.

$3.15M

—

AUPHBuy

2026-06-01 · Aurinia Pharmaceuticals Inc.

$1.5K

—

Newest 10 of 22 filingsEvery Form 4 on record, with outcomesPro →

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.