John F Sheridan

TNDM

John F Sheridan serves as PRESIDENT & CEO at Tandem Diabetes Care, Inc. (TNDM). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

2 trades

$277.1K

Total Sells

2 trades

$1.70M

Net Position

Net Seller

$1.42M

Companies Traded

TNDM

Active Period

Aug 2021 – Feb 2026

4 total trades

Most Recent

Sell TNDM

Feb 17, 2026 · $82.7K

John F Sheridan's Insider Trading at Tandem Diabetes Care, Inc. (TNDM)

Buys

2 · $277.1K

Sells

2 · $1.70M

Total Shares Bought

12,500

Total Shares Sold

19,289

TNDM Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 17, 2026	Sell	4,363	$18.95	$82.7K	0
Aug 11, 2025	Buy	10,000	$10.23	$102.3K	106,327
May 10, 2022	Buy	2,500	$69.90	$174.8K	10,058
Aug 10, 2021	Sell	14,926	$108.04	$1.61M	8,997