Brenton Karl Ahrens
CIK 1322927 · View on SEC EDGAR ↗
Insider
First SEC filing: April 13, 2005 · Latest: April 13, 2005
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 8 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 13, 2006 | DXCM | A | 10,000 | — | — | 10,000 Direct | — | Acquired | (price as of 2026-08-21) |
| April 19, 2005 | DXCM | C | 561,240 | — | — | 0 Indirect | -100.00% | Disposed | (price as of 2026-08-21) |
| April 19, 2005 | DXCM | C | 2,158,152 | — | — | 0 Indirect | -100.00% | Disposed | (price as of 2026-08-21) |
| April 19, 2005 | DXCM | C | 3,467,833 | — | — | 0 Indirect | -100.00% | Disposed | (price as of 2026-08-21) |
| April 19, 2005 | DXCM | C | 280,619 | — | — | 280,619 Indirect | — | Acquired | (price as of 2026-08-21) |
| April 19, 2005 | DXCM | C | 1,079,075 | — | — | 1,079,075 Indirect | — | Acquired | (price as of 2026-08-21) |
| April 19, 2005 | DXCM | C | 1,733,941 | — | — | 1,733,941 Indirect | — | Acquired | (price as of 2026-08-21) |
| April 13, 2005 | DXCM | A | 25,000 | $12.00 | $300,000 | 25,000 Direct | — | Acquired | 2881.3% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| April 13, 2006 | DXCM | Non-Qualified Stock Option (Right to Buy) | Common Stock (10,000) | $20.38 | April 13, 2016 | 10,000 | Acquired |
| April 19, 2005 | DXCM | Series D Preferred Stock | Common Stock | — | — | 561,240 | Disposed |
| April 19, 2005 | DXCM | Series C Preferred Stock | Common Stock | — | — | 2,158,152 | Disposed |
| April 19, 2005 | DXCM | Series B Preferred Stock | Common Stock | — | — | 3,467,833 | Disposed |
| April 13, 2005 | DXCM | Option to purchase Common Stock (Right to Buy) | Common Stock (25,000) | $12.00 | April 13, 2015 | 25,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 9 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 13, 2005 | DXCM | Series B Preferred Stock→ Common Stock (90,165) | 90,165 | Indirect |
| April 13, 2005 | DXCM | Series D Preferred Stock→ Common Stock (14,592) | 14,592 | Indirect |
| April 13, 2005 | DXCM | Series C Preferred Stock→ Common Stock (56,112) | 56,112 | Indirect |
| April 13, 2005 | DXCM | Series B Preferred Stock→ Common Stock (1,135,731) | 1,135,731 | Indirect |
| April 13, 2005 | DXCM | Series C Preferred Stock→ Common Stock (706,794) | 706,794 | Indirect |
| April 13, 2005 | DXCM | Series D Preferred Stock→ Common Stock (183,806) | 183,806 | Indirect |
| April 13, 2005 | DXCM | Series B Preferred Stock→ Common Stock (508,045) | 508,045 | Indirect |
| April 13, 2005 | DXCM | Series C Preferred Stock→ Common Stock (316,169) | 316,169 | Indirect |
| April 13, 2005 | DXCM | Series D Preferred Stock→ Common Stock (82,221) | 82,221 | Indirect |