Company
DCO · CIK 0000030305
Sale.
Filer Gilbert Cisneros · Chamber House · District CA31 · Transaction Type Sale · Asset Type Stock
Traded Aug 7, 2026 · Disclosed Sep 10, 2026FILED +34 DAYS
Source: House Clerk PTR · 20035390 · filed 2026-09-10 · View filing →
Purchase.
Filer Gilbert Cisneros · Chamber House · District CA31 · Transaction Type Purchase · Asset Type Stock
Traded Jul 10, 2026 · Disclosed Sep 4, 2026FILED +56 DAYS
Source: House Clerk PTR · 20035190 · filed 2026-09-04 · View filing →
Purchase.
Filer Gilbert Ray Cisneros · Chamber House · District CA31 · Transaction Type Purchase · Asset Type Stock
Traded Jul 9, 2026 · Disclosed Sep 4, 2026FILED +57 DAYS
Source: House Clerk PTR · 20035190 · filed 2026-09-04 · View filing →
Sale of 2,500 shares at $203.95 per share.
Reporting Person Oswald Stephen G · Officer Title Chairman, President & CEO · Transaction Code S
Traded Aug 18, 2026 · Disclosed Aug 19, 2026
Source: SEC Form 4 · 0001193125-26-357054 · filed 2026-08-19 · View filing →
Acquisition (code M) of 10,000 shares at $32.90 per share.
Reporting Person Oswald Stephen G · Officer Title Chairman, President & CEO · Transaction Code M
Traded Aug 17, 2026 · Disclosed Aug 19, 2026
Source: SEC Form 4 · 0001193125-26-357054 · filed 2026-08-19 · View filing →
Disposition (code F) of 6,111 shares at $206.98 per share.
Reporting Person Oswald Stephen G · Officer Title Chairman, President & CEO · Transaction Code F
Traded Aug 17, 2026 · Disclosed Aug 19, 2026
Source: SEC Form 4 · 0001193125-26-357054 · filed 2026-08-19 · View filing →
Sale of 5,766 shares at $201.15 per share.
Reporting Person Oswald Stephen G · Officer Title Chairman, President & CEO · Transaction Code S
Traded Aug 12, 2026 · Disclosed Aug 13, 2026
Source: SEC Form 4 · 0001193125-26-349759 · filed 2026-08-13 · View filing →
Acquisition (code M) of 15,000 shares at $32.90 per share.
Reporting Person Oswald Stephen G · Officer Title Chairman, President & CEO · Transaction Code M
Traded Aug 11, 2026 · Disclosed Aug 13, 2026
Source: SEC Form 4 · 0001193125-26-349759 · filed 2026-08-13 · View filing →
Disposition (code F) of 9,234 shares at $194.85 per share.
Reporting Person Oswald Stephen G · Officer Title Chairman, President & CEO · Transaction Code F
Traded Aug 11, 2026 · Disclosed Aug 13, 2026
Source: SEC Form 4 · 0001193125-26-349759 · filed 2026-08-13 · View filing →
Purchase.
Filer Gilbert Cisneros · Chamber House · District CA31 · Transaction Type Purchase · Asset Type Stock
Traded May 18, 2026 · Disclosed Jun 8, 2026FILED +21 DAYS
Source: House Clerk PTR · 20034713 · filed 2026-06-08 · View filing →