// insider-profile

TANG CAPITAL MANAGEMENT LLC

This page tracks every SEC Form 4 filing by TANG CAPITAL MANAGEMENT LLC: 50 transactions in total, including 43 open-market purchases and 3 sales. Each record is parsed directly from the original filing, with amendments reconciled so a corrected filing never double-counts.

// activity-summary

Recent insider activity is bullish. Over the last 30 days, 15 insiders purchased shares (net $1.9M). Buying was led by TANG CAPITAL MANAGEMENT LLC.

// track-record

$17.9M

Total purchased

$209K

Total sold

43B · 3S transactions

Net buyer

Overall direction

Most active in

BOLD22B RAIN7B 3S FULC6B AUPH5B OMIC3B

Avg buy vs sell price

RAIN$1.02→$1.21+18.6%

Average prices across open-market transactions in this dataset.

Largest trade: $5.2M in AUPH (Jun 2026)Filing history: Jun 2023 — Jul 2026Based on last 50 filings

// scorecard

Buys positive after 3m

-71.5%

Avg return at 3m

-71.5%

Median return at 3m

Scored buys

Best buy: RAIN-71.5% 3m (Oct 2023)Worst buy: RAIN-71.5% 3m (Oct 2023)

Absolute post-filing return, not market-adjusted · min. 5 matured open-market buys

See top insiders by track record →

Transaction History

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

Date	Insider	Company	Type	Shares	Price	Value	1d	1w	1m	3m	6m
Jul 21, 2026	TANG CAPITAL MANAGEMENT LLC	BOLD	Purchase	2,975	$2.44	$7K	+1.6%	-0.4%	—	—	—
Jul 20, 2026	TANG CAPITAL MANAGEMENT LLC	BOLD	Purchase	1,623	$2.44	$4K	+1.6%	-0.4%	—	—	—
Jul 17, 2026	TANG CAPITAL MANAGEMENT LLC	BOLD	Purchase	265	$2.44	$1K	+1.6%	-0.4%	—	—	—
Jul 17, 2026	TANG CAPITAL MANAGEMENT LLC	FULC	Purchase	50,945	$3.52	$179K	+1.7%	+3.0%	—	—	—
Jul 16, 2026	TANG CAPITAL MANAGEMENT LLC	BOLD	Purchase	18,491	$2.44	$45K	+1.2%	+2.9%	—	—	—

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// how to read this

Reading an insider's Form 4 history

Corporate insiders — directors, officers, and holders of more than 10% of a company's stock — must report their trades to the SEC on Form 4 within two business days. Looking at one insider's filings over time shows whether they tend to buy on the open market (a discretionary use of their own money, generally the strongest signal), sell, or simply receive and exercise equity awards as compensation.

The track record above measures how this insider's past open-market purchases performed in the months after each filing. Trades made under a pre-scheduled Rule 10b5-1 plan are flagged because they carry no timing signal. To pull any insider's full history programmatically, see the insider trading API or our guide to reading Form 4 filings.