Whittenburg Mark G

Officer · CNM

As of 2026-09-16, Whittenburg Mark G has 37 Form 4 transactions on record across 1 company — 4 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $365KIndirect: $9.7M$10.1Mas of 2026-09-16
  • Direct $365K
  • Indirect $9.7M
CNMindirect227,312 sh$9.7M
CNMdirect8,525 sh$365K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

CNM · 37 trades
2026-03-11: Withheld for tax, 331 sh ($16K)2026-03-10: Withheld for tax, 557 sh ($28K)2026-03-09: Withheld for tax, 278 sh ($14K)2025-12-31: Gift, 25,500 sh ($0)2025-06-09: Sale, 49,100 sh ($2.9M)2025-06-09: Conversion, 49,100 sh ($0)2025-06-09: Conversion, 49,100 sh ($0)2025-06-09: Other acquisition, 49,100 sh ($0)2025-06-09: Other acquisition, 49,100 sh ($0)2025-06-06: Sale, 900 sh ($54K)2025-06-06: Conversion, 900 sh ($0)2025-06-06: Other acquisition, 900 sh ($0)2025-06-06: Other acquisition, 900 sh ($0)2025-06-06: Conversion, 900 sh ($0)2025-03-13: Award / grant, 24,828 sh ($0)2025-03-13: Award / grant, 3,411 sh ($0)2025-03-11: Withheld for tax, 510 sh ($24K)2025-03-10: Withheld for tax, 599 sh ($28K)2025-03-07: Withheld for tax, 278 sh ($13K)2025-01-16: Sale, 48,026 sh ($2.6M)2025-01-16: Other acquisition, 48,026 sh ($0)2025-01-16: Other acquisition, 48,026 sh ($0)2025-01-16: Conversion, 48,026 sh ($0)2025-01-16: Conversion, 48,026 sh ($0)2025-01-15: Sale, 1,974 sh ($109K)2025-01-15: Conversion, 1,974 sh ($0)2025-01-15: Other acquisition, 1,974 sh ($0)2025-01-15: Other acquisition, 1,974 sh ($0)2025-01-15: Conversion, 1,974 sh ($0)2025-01-10: Sale, 50,000 sh ($2.5M)2025-01-10: Conversion, 46,452 sh ($0)2025-01-10: Other acquisition, 46,452 sh ($0)2025-01-10: Other acquisition, 46,452 sh ($0)2025-01-10: Conversion, 46,452 sh ($0)2024-03-11: Withheld for tax, 599 sh ($29K)2024-03-11: Withheld for tax, 509 sh ($25K)2023-03-13: Withheld for tax, 610 sh ($13K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-06-09CNMSale49,100 @ $60.03$2.9M−83.5% of holding9,691Form 4
2025-06-06CNMSale900 @ $60.03$54K−8.5% of holding9,691Form 4
2025-01-16CNMSale48,026 @ $55.13$2.6M−86.2% of holding7,667Form 4
2025-01-15CNMSale1,974 @ $55.29$109K−20.5% of holding7,667Form 4
2025-01-10CNMSale50,000 @ $50.49$2.5M−86.7% of holding7,667Form 4
32 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-11CNMWithheld for tax3318,525Form 4
2026-03-10CNMWithheld for tax5578,856Form 4
2026-03-09CNMWithheld for tax2789,413Form 4
2025-12-31CNMGift25,500227,312Form 4
2025-06-09CNMConversion49,10058,791Form 4
2025-06-09CNMConversion49,1000Form 4
2025-06-09CNMOther acquisition49,100252,812Form 4
2025-06-09CNMOther acquisition49,10049,100Form 4
2025-06-06CNMConversion9000Form 4
2025-06-06CNMOther acquisition900900Form 4
2025-06-06CNMOther acquisition900301,912Form 4
2025-06-06CNMConversion90010,591Form 4
2025-03-13CNMAward / grant24,82824,828Form 4
2025-03-13CNMAward / grant3,4119,691Form 4
2025-03-11CNMWithheld for tax5106,280Form 4
2025-03-10CNMWithheld for tax5996,790Form 4
2025-03-07CNMWithheld for tax2787,389Form 4
2025-01-16CNMOther acquisition48,02648,026Form 4
2025-01-16CNMOther acquisition48,026302,812Form 4
2025-01-16CNMConversion48,02655,693Form 4
2025-01-16CNMConversion48,0260Form 4
2025-01-15CNMConversion1,9740Form 4
2025-01-15CNMOther acquisition1,9741,974Form 4
2025-01-15CNMOther acquisition1,974350,838Form 4
2025-01-15CNMConversion1,9749,641Form 4
2025-01-10CNMConversion46,4520Form 4
2025-01-10CNMOther acquisition46,45246,452Form 4
2025-01-10CNMOther acquisition46,452352,812Form 4
2025-01-10CNMConversion46,45257,667Form 4
2024-03-11CNMWithheld for tax59911,724Form 4
2024-03-11CNMWithheld for tax50911,215Form 4
2023-03-13CNMWithheld for tax61012,323Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.