Stern Sadie
EVP Chief People & Culture Off
Sale 10b5-1
- Shares
- 2,565
- Price
- $78.62
- Value
- $201,660
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•74 filings
DXCM
DEXCOM INC
Net sales of $4.9M over the last 3 months
7 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
−$4,904,705
0 buyers · 7 sellers
12-month purchases
$1,001,702
1 distinct insiders
12-month sales
$12,970,895
9 distinct insiders
Highlighted alerts
2
39 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
93
Raw transactions
Everything returned by the filing
41
Voluntary view
P/S trades after deterministic checks
52
Administrative noise
Stored, never alerted
39
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- A
- Shares
- 5,841
- Price
- $0.00
- Footnotes
- 2
Represents a grant of restricted stock units that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. Restricted stock units represent a contingent right to receive one share of DexCom, Inc. Common Stock. Shares are held by the Boehnlein 2017 Trust, with respect to which the Reporting Person and the Reporting Person's spouse are co-trustees.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Brown Michael Jon
EVP Chief Legal Compliance Off
Sale 10b5-1
- Shares
- 1,700
- Price
- $85.48
- Value
- $145,316
Stern Sadie
EVP Chief People & Culture Off
Sale 10b5-1
- Shares
- 2,565
- Price
- $86.15
- Value
- $220,975
AUGUSTINOS NICHOLAS
Director
Sale 10b5-1
- Shares
- 6,539
- Price
- $84.04
- Value
- $549,538
Brown Michael Jon
EVP Chief Legal Compliance Off
Sale 10b5-1
- Shares
- 1,700
- Price
- $84.04
- Value
- $142,868
AUGUSTINOS NICHOLAS
Director
Sale 10b5-1
- Shares
- 1,550
- Price
- $84.02
- Value
- $130,231
Sylvain Jereme M
EVP, Chief Financal Officer
Sale 10b5-1
- Shares
- 3,638
- Price
- $83.27
- Value
- $302,936
Stern Sadie
EVP Chief People & Culture Off
Sale 10b5-1
- Shares
- 2,565
- Price
- $88.37
- Value
- $226,669
SAYER KEVIN R
Executive Chair
Sale 10b5-1
- Shares
- 97
- Price
- $91.41
- Value
- $8,867
SAYER KEVIN R
Executive Chair
Sale 10b5-1
- Shares
- 7,351
- Price
- $90.78
- Value
- $667,332
SAYER KEVIN R
Executive Chair
Sale 10b5-1
- Shares
- 19,308
- Price
- $89.71
- Value
- $1,732,043
Brown Michael Jon
EVP Chief Legal Compliance Off
Sale 10b5-1
- Shares
- 1,700
- Price
- $91.93
- Value
- $156,281
Heller Bridgette P
Director
Sale 10b5-1
- Shares
- 1,012
- Price
- $88.29
- Value
- $89,349
FOLETTA MARK G
Director
Sale 10b5-1
- Shares
- 2,000
- Price
- $85.32
- Value
- $170,640
FOLETTA MARK G
Director
Sale 10b5-1
- Shares
- 2,000
- Price
- $80.00
- Value
- $160,000
SAYER KEVIN R
Executive Chair
Sale 10b5-1
- Shares
- 26,756
- Price
- $76.32
- Value
- $2,041,999
Brown Michael Jon
EVP Chief Legal Compliance Off
Sale 10b5-1
- Shares
- 1,700
- Price
- $74.42
- Value
- $126,514
SAYER KEVIN R
Executive Chair
Sale 10b5-1
- Shares
- 26,756
- Price
- $72.00
- Value
- $1,926,432
Brown Michael Jon
EVP Chief Legal Compliance Off
Sale 10b5-1
- Shares
- 1,700
- Price
- $75.55
- Value
- $128,435
FOLETTA MARK G
Director
Sale 10b5-1
- Shares
- 199
- Price
- $74.82
- Value
- $14,889
FOLETTA MARK G
Director
Sale 10b5-1
- Shares
- 3,801
- Price
- $74.10
- Value
- $281,651
Coleman Jon
EVP, Chief Commercial Officer
Sale 10b5-1
- Shares
- 4,911
- Price
- $74.13
- Value
- $364,052
Coleman Jon
EVP, Chief Commercial Officer
Sale 10b5-1
- Shares
- 4,912
- Price
- $73.00
- Value
- $358,576
SAYER KEVIN R
Executive Chair
Sale 10b5-1
- Shares
- 26,759
- Price
- $72.00
- Value
- $1,926,648
Brown Michael Jon
EVP, Chief Legal Officer
Sale 10b5-1
- Shares
- 1,700
- Price
- $59.91
- Value
- $101,847
Heller Bridgette P
Director
Sale 10b5-1
- Shares
- 1,012
- Price
- $60.01
- Value
- $60,730
Brown Michael Jon
EVP, Chief Legal Officer
Sale 10b5-1
- Shares
- 1,700
- Price
- $63.04
- Value
- $107,168
Brown Michael Jon
EVP, Chief Legal Officer
Sale 10b5-1
- Shares
- 1,700
- Price
- $64.85
- Value
- $110,245
Heller Bridgette P
Director
Sale 10b5-1
- Shares
- 1,012
- Price
- $68.01
- Value
- $68,826
Collins Richard Alexander
Director
Sale 10b5-1
- Shares
- 2,906
- Price
- $59.05
- Value
- $171,599
Heller Bridgette P
Director
Sale 10b5-1
- Shares
- 1,012
- Price
- $58.07
- Value
- $58,767
Leach Jacob Steven
President & COO
PurchaseAlert
- Shares
- 2,500
- Price
- $55.43
- Value
- $138,563
Leach Jacob Steven
President & COO
PurchaseAlert
- Shares
- 15,700
- Price
- $54.98
- Value
- $863,139
Collins Richard Alexander
Director
Sale 10b5-1
- Shares
- 3,948
- Price
- $55.17
- Value
- $217,811
Malady Kyle
Director
Sale 10b5-1
- Shares
- 667
- Price
- $80.86
- Value
- $53,934
Stern Sadie
EVP, Chief HR Officer
Sale 10b5-1
- Shares
- 1,466
- Price
- $80.00
- Value
- $117,280
Sylvain Jereme M
EVP, Chief Financal Officer
Sale 10b5-1
- Shares
- 4,824
- Price
- $74.17
- Value
- $357,796
Brown Michael Jon
EVP, Chief Legal Officer
Sale 10b5-1
- Shares
- 500
- Price
- $80.29
- Value
- $40,145
FOLETTA MARK G
Director
Sale 10b5-1
- Shares
- 195
- Price
- $81.54
- Value
- $15,900
FOLETTA MARK G
Director
Sale 10b5-1
- Shares
- 2,555
- Price
- $81.02
- Value
- $207,003
Stern Sadie
EVP, Chief HR Officer
Sale 10b5-1
- Shares
- 1,466
- Price
- $88.99
- Value
- $130,459
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Oct 27, 2026 | Stern Sadie EVP Chief People & Culture Off | Sale | 2,565 | $78.62 | $201,660 | |
| Oct 15, 2026 | Brown Michael Jon EVP Chief Legal Compliance Off | Sale | 1,700 | $85.48 | $145,316 | |
| Sep 28, 2026 | Stern Sadie EVP Chief People & Culture Off | Sale | 2,565 | $86.15 | $220,975 | |
| Sep 15, 2026 | AUGUSTINOS NICHOLAS Director | Sale | 6,539 | $84.04 | $549,538 | |
| Sep 15, 2026 | Brown Michael Jon EVP Chief Legal Compliance Off | Sale | 1,700 | $84.04 | $142,868 | |
| Sep 14, 2026 | AUGUSTINOS NICHOLAS Director | Sale | 1,550 | $84.02 | $130,231 | |
| Sep 10, 2026 | Sylvain Jereme M EVP, Chief Financal Officer | Sale | 3,638 | $83.27 | $302,936 | |
| Aug 27, 2026 | Stern Sadie EVP Chief People & Culture Off | Sale | 2,565 | $88.37 | $226,669 | |
| Aug 20, 2026 | SAYER KEVIN R Executive Chair | Sale | 97 | $91.41 | $8,867 | |
| Aug 20, 2026 | SAYER KEVIN R Executive Chair | Sale | 7,351 | $90.78 | $667,332 | |
| Aug 20, 2026 | SAYER KEVIN R Executive Chair | Sale | 19,308 | $89.71 | $1,732,043 | |
| Aug 14, 2026 | Brown Michael Jon EVP Chief Legal Compliance Off | Sale | 1,700 | $91.93 | $156,281 | |
| Aug 12, 2026 | Heller Bridgette P Director | Sale | 1,012 | $88.29 | $89,349 | |
| Aug 03, 2026 | FOLETTA MARK G Director | Sale | 2,000 | $85.32 | $170,640 | |
| Jul 31, 2026 | FOLETTA MARK G Director | Sale | 2,000 | $80.00 | $160,000 | |
| Jul 20, 2026 | SAYER KEVIN R Executive Chair | Sale | 26,756 | $76.32 | $2,041,999 | |
| Jul 15, 2026 | Brown Michael Jon EVP Chief Legal Compliance Off | Sale | 1,700 | $74.42 | $126,514 | |
| Jul 06, 2026 | SAYER KEVIN R Executive Chair | Sale | 26,756 | $72.00 | $1,926,432 | |
| Jun 15, 2026 | Brown Michael Jon EVP Chief Legal Compliance Off | Sale | 1,700 | $75.55 | $128,435 | |
| Jun 15, 2026 | FOLETTA MARK G Director | Sale | 199 | $74.82 | $14,889 | |
| Jun 15, 2026 | FOLETTA MARK G Director | Sale | 3,801 | $74.10 | $281,651 | |
| Jun 04, 2026 | Coleman Jon EVP, Chief Commercial Officer | Sale | 4,911 | $74.13 | $364,052 | |
| Jun 03, 2026 | Coleman Jon EVP, Chief Commercial Officer | Sale | 4,912 | $73.00 | $358,576 | |
| May 21, 2026 | SAYER KEVIN R Executive Chair | Sale | 26,759 | $72.00 | $1,926,648 | |
| May 15, 2026 | Brown Michael Jon EVP, Chief Legal Officer | Sale | 1,700 | $59.91 | $101,847 | |
| May 12, 2026 | Heller Bridgette P Director | Sale | 1,012 | $60.01 | $60,730 | |
| Apr 15, 2026 | Brown Michael Jon EVP, Chief Legal Officer | Sale | 1,700 | $63.04 | $107,168 | |
| Mar 16, 2026 | Brown Michael Jon EVP, Chief Legal Officer | Sale | 1,700 | $64.85 | $110,245 | |
| Feb 12, 2026 | Heller Bridgette P Director | Sale | 1,012 | $68.01 | $68,826 | |
| Nov 14, 2025 | Collins Richard Alexander Director | Sale | 2,906 | $59.05 | $171,599 | |
| Nov 12, 2025 | Heller Bridgette P Director | Sale | 1,012 | $58.07 | $58,767 | |
| Nov 10, 2025 | Leach Jacob Steven President & COO | Purchase | 2,500 | $55.43 | $138,563 | |
| Nov 10, 2025 | Leach Jacob Steven President & COO | Purchase | 15,700 | $54.98 | $863,139 | |
| Nov 10, 2025 | Collins Richard Alexander Director | Sale | 3,948 | $55.17 | $217,811 | |
| Sep 05, 2025 | Malady Kyle Director | Sale | 667 | $80.86 | $53,934 | |
| Sep 04, 2025 | Stern Sadie EVP, Chief HR Officer | Sale | 1,466 | $80.00 | $117,280 | |
| Sep 02, 2025 | Sylvain Jereme M EVP, Chief Financal Officer | Sale | 4,824 | $74.17 | $357,796 | |
| Aug 15, 2025 | Brown Michael Jon EVP, Chief Legal Officer | Sale | 500 | $80.29 | $40,145 | |
| Aug 15, 2025 | FOLETTA MARK G Director | Sale | 195 | $81.54 | $15,900 | |
| Aug 15, 2025 | FOLETTA MARK G Director | Sale | 2,555 | $81.02 | $207,003 | |
| Jul 28, 2025 | Stern Sadie EVP, Chief HR Officer | Sale | 1,466 | $88.99 | $130,459 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.