Christopher J. Twomey
CIK: 0001238935
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (8 total)
- Oct 27, 2026TNDM
TANDEM DIABETES CARE INC
Exercise(M)Direct1.7K shares at avg. $19.00$32K - Oct 27, 2026TNDM
TANDEM DIABETES CARE INC
Sale(S)Direct1.7K shares at avg. $19.15$33K - May 21, 2026TNDM
TANDEM DIABETES CARE INC
Exercise(M)Direct8.8K shares- - May 20, 2026TNDM
TANDEM DIABETES CARE INC
Award(A)DirectRestricted Stock Unit
10.2K shares- - May 14, 2026BNGO
Bionano Genomics, Inc.
Award(A)DirectStock Option (Right to Buy)
9.1K shares- - Jun 11, 2025BNGO
Bionano Genomics, Inc.
Award(A)DirectStock Option (Right to Buy)
2.8K shares- - May 22, 2025TNDM
TANDEM DIABETES CARE INC
Exercise(M)Direct4.4K shares at avg. $20.64$91K - May 21, 2025TNDM
TANDEM DIABETES CARE INC
Award(A)DirectRestricted Stock Unit
8.8K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 27, 2026 |  TNDM TANDEM DIABETES CARE INC | Exercise(M) | 1,700 | $19.00 | $32,300 | Direct |
| Oct 27, 2026 | TNDM TANDEM DIABETES CARE INC | Sale(S) | 1,700 | $19.15 | $32,555 | Direct |
| May 21, 2026 | TNDM TANDEM DIABETES CARE INC | Exercise(M) | 8,759 | - | $0 | Direct |
| May 20, 2026 | TNDM TANDEM DIABETES CARE INC | Award(A) Restricted Stock Unit | 10,220 | - | - | Direct |
| May 14, 2026 |  BNGO Bionano Genomics, Inc. | Award(A) Stock Option (Right to Buy) | 9,149 | - | - | Direct |
| Jun 11, 2025 | BNGO Bionano Genomics, Inc. | Award(A) Stock Option (Right to Buy) | 2,775 | - | - | Direct |
| May 22, 2025 | TNDM TANDEM DIABETES CARE INC | Exercise(M) | 4,387 | $20.64 | $90,548 | Direct |
| May 21, 2025 | TNDM TANDEM DIABETES CARE INC | Award(A) Restricted Stock Unit | 8,759 | - | - | Direct |
1-8 of 8 transactions
About TWOMEY CHRISTOPHER J
TWOMEY CHRISTOPHER J (SEC CIK 0001238935) files insider reports with the SEC as Director of TANDEM DIABETES CARE INC (TNDM) and Director of Bionano Genomics, Inc. (BNGO).
Signal8 holds 5 ownership filings by TWOMEY CHRISTOPHER J, all Form 4s, filed between May 23, 2025 and Oct 29, 2026. Those filings report 8 transactions, from May 21, 2025 to Oct 27, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on TWOMEY CHRISTOPHER J's filings is in SAN DIEGO, CA.
Recent filings by TWOMEY CHRISTOPHER J
- Oct 27, 2026: Option exercise of TNDM shares (Form 4, code M).
- Oct 27, 2026: Open-market sale of TNDM shares (Form 4, code S).
- May 21, 2026: Option exercise of TNDM shares (Form 4, code M).
- May 20, 2026: Grant or award of TNDM derivative securities (Form 4, code A).
- May 14, 2026: Grant or award of BNGO derivative securities (Form 4, code A).
Other insiders filing for TANDEM DIABETES CARE INC (TNDM)
- Kyrillos Jean-Claude, EVP & Chief Operating Officer
- Vosseller Leigh, EVP & CHIEF FINANCIAL OFFICER
- Sheridan John F, PRESIDENT & CEO
- Morrison Susan, EVP & Chief Admin. Officer
- Gasser Elizabeth Anne, EVP, Chief Strategy Officer
- Carpenter Rick, EVP & Chief Technology Officer