Leigh Vosseller

All filings by Leigh Vosseller on record concern Tandem Diabetes Care Inc, in the capacity of finance chief. Between 15 November 2018 and 15 August 2026, the trades on record add up to 98 filings.

On the open market, the record shows 6 purchases worth €485k and 26 sales worth €14.9M. Taken together, the sales exceed the purchases by €14.4M. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. The rest of the record consists of 17 share grants and 49 option exercises.

The median purchase comes to €81k. On 3 out of 4 purchases, another insider of the same company was buying within the same 30 days. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. Ninety days after publication, 4 purchases show a median change of +14.8%, with the price up in 50% of them. They describe history only and say nothing certain about the share price ahead.

The record was last updated on 18 August 2026 with an option exercise in Tandem Diabetes Care Inc. The last purchase on record was published on 11 August 2025, which is 439 days ago. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. For comparison, the SEC allows two business days to file a Form 4. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.